Bigger Injectors Stock Ecu

what would be the estimate gain from 90bhp after a remap with bigger injectors?. Tuning modern GDI engines is about so much more than just AFR, spark and boost. Then again the ECU may cause the leanness. So bigger injectors will only worsen the problem. Many of these tips were provided from 2000-2006 and some may be outdated, though most are probably still valid. but i do have a good w2a i/c set-up too. The stock pump will have trouble keeping up with stock injectors, at 100% duty cycle. Click here to learn how to install LS1 injectors and rail. yeah, you keep the stock ECU and then you get hondata, uberdata, or another one of the standalones the stock ECU will obviously not run injectors that much larger than stock 720cc injectors? how much boost are you making. I put some 440cc lotus injectors in today and let the stock ecu adjust and took it for a 20 min drive then let it sit again and i went driving around and the car seemed to perform a. Bigger Injectors with a stock STi? I am going to be rebuilding an STi I just bought and I would like to put some forged pistons and helix 860cc injectors. throw on a piggyback and larger injectors after you get it all sorted and you can make even more power. The stock fuel pump and injectors often are incapable of flowing a large amount of fuel beyond the stock level. Wondering what the largest size injector is that anyone's had on a stock ecu. When adjusting this value, a lower number represents an SMALLER injector, whereas a larger scale value will represent a LARGER injector. The stock ECU is also completely limited to controlling injectors having the exact characteristics of the stock injectors (impedience, etc). Without a way to tune the ecu (below), you cannot add larger injectors without causing other issues. im taking my friends s/c out next week, which i will eventually install onto my car, but he needs my fuel pump and injectors for the swap. if the pump is able to turning in 100psi then the equipment could have as much as that lots. I was under the impression most stock ECU's could compensate for injectors 10% larger but if the stock ECU is proven to withstand 310cc then that is a fact. Generic adjustable fuel pressure regulator. net; General E30 M3 Discussion; If this is your first visit, be sure to check out the FAQ by clicking the link above. Your Base Fuel Map in the ECU tells the injectors to run at pulse width of 3. - Stock Air Box with TRD drop in and larger inlect duct in aluminium - TRD Header without heat shields (means more heat = less hp) - stock main cat - TTE Exhaust 1 dyno with PowerFC with everything stock, except the rev limit that was raised to 7300RPM 1 dyno with stock ECU. ) Alternatively, if you must stick with the larger Ford-style cap then the MSD 8421 may work. the stock injectors on the na supra are larger for one, it is not mapped for boost, and as you said it, they used methanol via a megasquirt setup. On 15 PSI with a 15G on stock injectors I was at a 12. 315 cc injectors are way too much for stock ECU to compensate. MPI36SB245HE - Set for Holley 36 lb/hr injectors, and performance camshafts (226 to 245 degrees duration at. China truck ecu China motorcycle ecu China universal ecu car China toyota ecu China ecu repair tools China universal ecu programmer For product pricing, customization, or other inquiries: Contact Supplier. Our kit includes the K04 turbo, the compressor inlet O-ring, three turbo to Race DP studs, one manifold to turbo gasket, four Bosch fuel injectors, and one turbo to cat gasket. New from Energycoil Racing is a direct replacement for Bosch Style 4 Channel Igniters! If you have a standalone ECU with an external Ignitor, you may not be getting all the energy to the coils you need. HDFX control maps have been added to allow advanced tuning of cam timing and options to select the current HDFX mode. These work well for a stock turbo and smaller upgraded turbo cars. So, with stock ECU programming, or programming that has not disabled fuel cut, you are actually turning the fuel on and off with the throttle as you decel and re-apply the throttle This can easily be heard and felt while you are riding. My airfuels are consistantly tuneable and stock ecu always corrects a perfect 14. Fuel Injectors - posted in R35 GT-R: So I have looked around and I could not find any kind of information I needed. Its got all new plugs and wires (bpr7es) , etc. I know this topic has been discussed in here numerous times before so please excuse one more thread on this matter. This did a sufficiently good job, but for the most effective power you would need to vary the timing to a greater degree than a fixed ratio advance curve. Idea for Aristo 2JZ-GTE fuel tables 440cc-to bigger Ok. 8 ECU, its far easier to scale injectors in with the mapping with a larger sized MAF housing due to the structure of the ECU and how it works. I own a 1997 Ford F-150 4x4 with a 4. 315 cc injectors are way too much for stock ECU to compensate. 5psi - minimum 91 octane. also, if i do go bigger injectors, will i need a better regulator or pump? also can the stock ecu handle any bigger injectors?. A comprehensive look at everything you need to know about fuel injectors as it pertains to Corvettes, old and new. Fuelling and HDFX Maps. In a few short hours, Matt was able to swap out the restrictive stock throttle body and replace it with HPI’s throttle body. There is an aftermarket replacement system for these applications has been developed that converts the CSFI system into a conventional multi-point fuel injection system. trust me I know, I built my own. Do I need larger fuel injectors? This is a discussion on Do I need larger fuel injectors? within the Internal Engine forums, part of the LSx Technical Help Section category; Hello. Tuning Tips - To calculate a starting value for a different injector size than stock, use the following formula:. TDI ECU Tuning - By Jeff Stevenson. Cummins Fuel Injectors & Accessories For Dodge Diesel Engines 2003-Current. This eliminates the troublesome poppet style injectors. The stand alone LS kits are the 70050 $795 (stand alone w/o trans control) or the 70051 $995 (stand alone w/ trans control) These kits come with the wiring harness, ECU, and handheld and will connect to all your stock sensors and injectors (as well as aftermarket injectors and manifolds). The car is running a precision 5558 turbo and a Greddy E-Manage Ultimate Gold. even the aftermarket ecu requires low impedence drivers to be built. So I program the Stage 1. FAST, Holley, Injector Dynamics and more!. Fuel pressure. Injector scaling/latency for various injectors: I figure we could use a thread for injector scalings and latencies. 0L Power Stroke Diesel - Bigger injectors on almost stock truck? - Hey there, I think I have a bad injector, (or turbo seal) and was wandering if I had to change them, what I should go with. Engineered to deliver. I also chose a little bigger step up than 42% because of my performance goals. Piggy-back Fuel Controllers. There are a couple different ways for an engine to measure the amount of incoming air. I was looking at getting Mike Supra's HKS rail and 720cc injectors but Tissimo said that I would be pulling too much fuel at idle on 720s which would cause too much correction with timing on the stock 1J ECU. They also did some tweaks to the ECU but the aftermarket hobbyists just slapped in the parts and ran the stock NA ECU with good success. This makes the ECU's job very easy. In fact, you will most likely create many drivability issues that were not present before the swap to larger injectors. However, for engines outfitted with a turbo or supercharger, stock fuel injectors will decrease performance. I have a choice of injectors for my 1jz drift car. 3sgte gen2/3 interconnector manual; Fiat500Abarth(euro5) interconnector manual. Fiat Abarth 500 ECU Remapping for the every day driver or track fun user. Some fuel should come out of the opening. 5psi) you will gain ~29% of flow. i wont be uninstalling the kit and installing it into my car the same day, and ill probably need to drive the car around (minimally if need be) for a couple weeks before putting the kit on. The turbo is upgraded with different size wheels, it has larger injectors, a bigger intercooler and intercooler piping, and it runs 3bar MAP sensors to run a peak boost pressure of 22psi STOCK!. you need high impedence injectors so you do not burn out the injector drivers. LugTronic allows you to be up and running with a stand alone ECU in less than 30 minutes! Plugs into your stock harness, and mounts into the stock location. 5 - 12 lbs boost is the max you can safely run with larger (252cc) injectors. We have found Honda ECUs work particularly well with larger injectors. I can fit 1000cc Bosch , , 850cc Bosch, 650cc Bosch or standard injectors. Almost or all sensors on the 1JZ are identical to those on the 2JZ as long as you have a JDM engine like the ones that come from soarers (jzz30) and chasers (jzx90). Ryan Dudek _____ Yes. So the stock injectors can be used. With our Stage 1 ECU Tuning for the Polaris RZR XP Turbo completed, we wanted to tackle a more aggressive ECU flash using larger injectors like some of the competition does. The stock ecu will not accept low impedence injector. There are a number of ways to tune the stock ecu, depending on how you choose to do it: Option 1:. The SR, just like the out-going CA, was a turbocharged intercooled engine in top form. More fuel will come out. 0GX injectors flow? Other reasons would be if you wanted to run a dry nitrous kit or another fuel with a lower stoich than gasoline like say ethanol. Select your vehicle by clicking on the appropriate image below:. One oddity of the standard EFI computer (big port only?) is that below 6,000rpm it uses two injector pulses per engine revolution, (it's not a 'sequential' type of computer) and above that a single, longer pulse. I have also installed larger injectors which the emanage controls ok. The injector size is coded into the PCM, and is used to determine pulse width of the injectors. Since the ECU is now spraying 421% more fuel, a meter that flows 421% more air will return the air to fuel ratio back to the original equivalent. Scale the entire map down when using larger injectors. i was thinking of finding injectors that flow 10% more on an old used car so we can have a junkyard $100 major upgrade that will likely beat ecu upgrades btw anything over 10% bigger is the max you should have on a stock ecu too much gas is bad python sells stock injectors rebuilt to flow 10% more but these are seriously pricey. If, lets say, the ECU put out 2 volts on one injector, in which will open it all the way and spray its maximum, with an amount of 10ml for instance - this will be on the stock Injectors. indeed, 12psi for years of thrashing with stock 4agze ecu, afm, 365cc injectors etc. -uses adapter plugs to plug and play into stock ecu harness-box comes pre-programmed and is laptop programmable for fuel and boost timing retard 24. 9 and match the stock lb/[email protected] ratings. What injectors should I fit? Is it a case of Bigger the Better? or is there an ideal injector size to fit?. Injector Compatibility With ECU’s. A - Injectors are controlled by the ECU. What is the Injector Balance Map Qustion from Customer: What is the Injector Balance Map Response The injector balance map controls the split between the lower and upper injectors. Many people get themselves in trouble by trying to use a piggyback ECU in a situation it was never designed for - ie turbocharging a N/A engine and adding larger injectors. 54 to 60 PSI. Our custom remap option for the original Clio RS 197 / 200 ECU. 7 with the bigger injector. The best way to do it is to spend the money to get a Hondata S300 ECU, which will work to control larger injectors and your automatic transmission. Sometimes when you are tuning an engine that is already in a vehicle on a chassis dyno, a lot of strange things can happen that you should be aware of. Fuel: Fuel Injector Size Adjustment Calculations. Any more than this, you hit the 16. I have a 1jz vvti and wondering how i can make about 380-400 hp with stock turbo and ecu. Bigger Injectors for MSM You can't idle more than a 320 or so injector with the stock ECU. I would be running the lsj injectors (36 lb/hr) at around 35-40 psi. HPI’s larger throttle body and injectors were the answer. Unless you use something like a piggy back to tell the ECU that you are using larger injectors you are out of luck. The nominal injection pressure for many Ford EFI systems is 39. i wont be uninstalling the kit and installing it into my car the same day, and ill probably need to drive the car around (minimally if need be) for a couple weeks before putting the kit on. MYTH: 6 Bigger injectors with ECU tune or AEM FIC tune is better-again only 2 guys in the country can re-tune the stock ECU-AEM FIC is no longer supported by AEM. The Hondata tune wouldn't allow me to pass. great value for money,,. China truck ecu China motorcycle ecu China universal ecu car China toyota ecu China ecu repair tools China universal ecu programmer For product pricing, customization, or other inquiries: Contact Supplier. The other set controls cyl #2 and #3. Thanks! Stock Pic and Height Pic when they were installed. First, some background information on how the Subaru ECU controls Air-to-Fuel Ratio at low load (idle, low throttle, cruising) where AFR is kept at ~14. Injectors should not go static in a running engine. Furthermore, the OEM ECU will not be able to handle an injector that is more than 20% larger than stock and will suspect that one or more of its sensors are faulty and will revert to its programmed settings, which means that the fuel air mixture will not be optimal and will probably be rich as this is the failsafe setting on the ECU when it. I own a 1997 Ford F-150 4x4 with a 4. Injector Sizing and Locater page. I have a 1jz vvti and wondering how i can make about 380-400 hp with stock turbo and ecu. Generic adjustable fuel pressure regulator. If you're using a stock ECU you'll have to use the injector size that came with the motor (I'm not sure if they're 190CC or 240CC). I've heard that there is a guy at a local shop that is a whiz with supras. The emanage is a piggyback fuel and ignition controller which alters the signals from the sensors and make the ECU squirt more fuel in the engine to cope with the forced induction. We sell a variety of VP44 Injection pumps to cover stock trucks to highly modified trucks. the stock ecu can accept 11-14 ohm injectors, for the 4-6 ohm injectors you would need an add on resistor box. 2000 Honda Civic EX 5 Speed D16Y8 The kid who owned the car before me installed larger injectors, and this is why you shouldn't if you don't know what you're doing! It annoys the shit out of me!. At the very least an ECU reprogram will be absolutely necessary. running the stock injectors, however they do allow you (with the correct tuning Stages) to run gas or E85 without having to change the injectors. I highly recommend at least reducing the values in this table if you are installing larger injectors. Car has a stock turbo its a small one but its good for about 18 PSI before its useless. I have a 1jz vvti and wondering how i can make about 380-400 hp with stock turbo and ecu. Because they pass very little current (unlike the ignition points) they can last for up to 100,000 mi. Interchange Information. Injector scaling/latency for various injectors: I figure we could use a thread for injector scalings and latencies. The primary injectors are always used, and may be stock or other injectors with a rapid opening time and good spray pattern. If you go to larger injectors and don' t change the injector size in the PCM, the car will run incredibly rich. Ryan Dudek _____ Yes. With that said, making 300rwhp with the stock ecu/injectors "can" be done, "has" been done, and it does require quite a bit of additional fuel pressure (which effectively turns the 35lb injectors into ~42lb injectors). Same MAF module as stock HO. What is the Injector Balance Map Qustion from Customer: What is the Injector Balance Map Response The injector balance map controls the split between the lower and upper injectors. My main concerns with that are getting the injectors scaled correct in the ecu. Nissan also produced a cheaper naturally aspirated version called the SR20DE. the color of my injectors in the car are pink top purple is. With a set of brand-new factory units or upgraded aftermarket diesel injectors, you’ll be able to supply more fuel in a better spray pattern than the stock units ever could. uses the larger Agency Power. eg the secondary injectors may use E85 or race gas. That’s why you should consider swapping them out with an aftermarket set of performance fuel injectors. Note- Contact FM for recommendations on spark plug heat range and gap. 4302 I ctrl A to select entire map. Whether you have a standard engine and you're looking to smooth out flat spots, optimize performance and rid yourself of catalytic related fault codes or you have a wild engine in need of a custom map, we can help. I was looking at getting Mike Supra's HKS rail and 720cc injectors but Tissimo said that I would be pulling too much fuel at idle on 720s which would cause too much correction with timing on the stock 1J ECU. It wont run once you get about 20-30%+ larger injector. If you run much larger injectors with the stock ecu, you're just going to be dumping a lot of extra fuel and the car will barely run. If an injector is static in a running engine (open 100% of the time), that injector is no longer able to control fuel delivery. If you add larger injectors the car will be running rich when it should be running 14. After installing a set of larger port injectors it is very important to ensure that the ECU knows their true size so that it can accurately calculate the correct injector opening time for a given volume of fuel. what would be the estimate gain from 90bhp after a remap with bigger injectors?. I am sure some are better than others but the main important thing is to get them flow matched. Even then, you probably won't see a difference unless you are running a turbo or super. The size of the injectors is a large contributor as to what this map looks like. Based on your observed AFR it seems close. The stock fuel injectors on a 84-89 Z31 Turbo have a flow rate of about 260CC/min. Made in USA. richen your car), it simply allows for more fuel to be delivered if you run higher boost or larger injectors. Basic Overview of Electronic Fuel Injection. com software do? The stock Suzuki Engine ECU contains a lot of advanced features that many owners are not even aware of. Fuel Injector Problems (This is an internal page of the JAGUAR FUEL INJECTOR SERVICE. in terms of bumping up fuel delivery you could accomplish the very same thing by installing larger injectors instead. Many people get themselves in trouble by trying to use a piggyback ECU in a situation it was never designed for - ie turbocharging a N/A engine and adding larger injectors. even the aftermarket ecu requires low impedence drivers to be built. com: powerstroke 6. At idle and untill the minimum duty cycle reaches a 14. I would be running the lsj injectors (36 lb/hr) at around 35-40 psi. Adding a fuel pump will not give you more fuel (i. The pulse width of the injector is what is programmed into the ECU. their PC, larger fuel injectors if you are running more horsepower than your stock injectors can handle, an electronic boost control solenoid (PITA) or a manual boost controller (easy), and the Hydramist water injection system. a fuel pump and a ECU tune. Even with bigger injectors and tuning around dropping fuel pressure, they don't offer much beyond this power level so skip past these if your goals exceed this amount of. There is absolutly no gain in power by adding larger injectors if the stock injectors will flow enough fuel at 80% duty cycle. I've even had to crank the S-AFC's LO settings to -10% to smooth out the transition from closed-loop mode to open-loop mode. It’s measured in grams per second. Many people get themselves in trouble by trying to use a piggyback ECU in a situation it was never designed for - ie turbocharging a N/A engine and adding larger injectors. Even though you may need more fuel when say the boost is increased or a set of camshafts are fitted, if you raise. what would be the estimate gain from 90bhp after a remap with bigger injectors?. A proper tune will increase boost and smooth out your AFRs too. This should save a lot of time in swapping out the sensor bung, sensor, and re-wiring. my question is will the stock injectors handle this, and or will i gain anything from going to bigger injectors. The injectors are driven by the ECU. I have also installed larger injectors which the emanage controls ok. On pre-2007 models the injectors are smaller than the Aero and 2007+ model year 1. Upgrading Harley-Davidson EFI engines. This thread was a long but good read, thanks for all the info. The Alliant Injector Brush Kit provides you with the proper tools to clean the injector bore and seat while installing new injectors in your engine. There is an aftermarket replacement system for these applications has been developed that converts the CSFI system into a conventional multi-point fuel injection system. So the ECU is supposed to figure that out and adjust the "open time" usually called duty cycle. You must remap the program in order to achieve the benefits of the larger ecu's. You may know,. 1) Removing the Stock Engine Control Unit a) Access the stock Engine Control Unit (ECU). 7 Cummins injectors for Dodge trucks. 0ms*** Stock injector on time at idle for a 170F warm car is 2. The ECU doesn't recognize that you have larger capacity injectors, and runs them at the same duty cycle as if you still had the OEM injectors. You will need 42% bigger injectors. Unleash the power of your 1987 to 2017 Ford Mustang with Fuel Injector Clinic’s 1000cc Fuel Injector Set. if the pump is able to turning in 100psi then the equipment could have as much as that lots. First, some background information on how the Subaru ECU controls Air-to-Fuel Ratio at low load (idle, low throttle, cruising) where AFR is kept at ~14. HPI’s larger throttle body and injectors were the answer. For performance, an adjustable FPR is best used in conjuction with larger injectors: * Going from 3bar (43. And yes, 96% value is high, so larger injectors are always better. When we upgraded the stock turbo on our built Evo X time attack project car for one of Garrett's GTX3076R kits, we reached out to Fuel Injector Clinic for a set of the company's larger fuel injectors that we knew could keep up with the air volume produced by the GTX. It’s measured in grams per second. Does not appear a problem at the moment but I want to be safe and in future the performance mods i will do will probably require bigger injectors anyhow so its an idea. If I have the bike reasonably close with a reflash running it N/A, which ratio FMU will get me in the ball park for 8-ish pounds of boost?. The size of the injectors is a large contributor as to what this map looks like. The longer the pulse duration, the more fuel is added to the air/fuel mixture. I have a LSA Engine swapped into a 1966 Nova SS. any help will be greatly appreciated. So, for the aftermarket Injectors, the ECU will put out 2 volts once again, in which will open the injectors all the way, but possibly spraying 20ml this time. 0 have two spool valves on top of the injector. Of course, the ECU doesn't know that the injectors are flowing more, so it keeps opening them for the same amount of time. As most would not believe, A simple double pumper system and larger injectors will take your STOCK fuel system over 800WHP+. This should save a lot of time in swapping out the sensor bung, sensor, and re-wiring. You must remap the program in order to achieve the benefits of the larger ecu's. But why use larger injectors? Are the stock injectors maxed out, is it safer to have more fuel coming from the Siemens Deka 80lb injectors? Well we are going to do some. What ECUs Will Work? EJ20G ECUs were available from 1989 (?) - 1996 (?) and have the same 4-plug connector as used on the 1989-1994 USDM Legacy - turbo and NA use the same connector. For example one Hondata customer using 830 cc injectors in a B20 turbo has drivability indistinguishable from stock and achieves 30mpg. Keep in mind, none of these components "know" what the other is doing. Click here to learn how to install LS1 injectors and rail. running the stock injectors, however they do allow you (with the correct tuning Stages) to run gas or E85 without having to change the injectors. I have a 1jz vvti and wondering how i can make about 380-400 hp with stock turbo and ecu. And that´s probably it, don´t know mutch more info about them. As for running bigger injectors, the stock ecu can almost certainly handle bigger ones. If you run much larger injectors with the stock ecu, you're just going to be dumping a lot of extra fuel and the car will barely run. Larger fuel injectors are only required when you have exceeded the horsepower capacity of the existing fuel injectors. What are they? can the stock ECU be remapped? At which power level is the stock ECU a hindrance before piggybacks and stand alone units are considered? Currently running: Stock 370cc injectors. Its got all new plugs and wires (bpr7es) , etc. Btw to answer your question most turbo kits that use stock injectors also use a FMU which raises fuel pressure really high and forces a lot of fuel through the small stock injector when it opens simulating a much larger injector. Piggyback devices, rising rate fuel pressure regulators and ignition retard devices are not needed. 5i 25i bolt on includes front mount intercooler oem bov no ecu pump injectors turboworld exhaust system air intake assembly turbocharger 10130420 246902 s2108k07a001t req 400cc fue subaru. I run Z32 maf w/ 60lb injectors all controlled by S-AFC and stock ecu. Piggyback ECU will do the job and allow you to run 540cc injectors out of a GT4 on the standard fuel rail and will see you sailing towards 500bhp on a single turbo. So, for the aftermarket Injectors, the ECU will put out 2 volts once again, in which will open the injectors all the way, but possibly spraying 20ml this time. Upgrading Harley-Davidson EFI engines. If you have larger than stock injectors I REQUIRE that you have proper fuel system supporting mods (Rails, Lines, Dampers, Regulator) to ensure a stumble-free calibration. Perfect Power Technical Articles - Extra Injector Tuning. The OE Bosch 550cc that we use, actually can run at lower pulse width than the stock injector and the injector latency is faster than the stock R53 injector. Modern engines have come a great distance in a very short amount of time. Tuning EFI Systems on a Chassis Dyno. If you have 440cc, then no larger than 880cc, assuming you are not talking about pump gas, not E85. If you don't want to have to use race fuel, get the. On 15 PSI with a 15G on stock injectors I was at a 12. 92' LX -Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. The biggest practical injector upgade for NA ECU is 450cc (-53%) The biggest practical injector upgrade for a TT ECU is 720cc (-50%) This is why most NA cars doing a TT conversion switch to a TT ECU, so they car run larger injectors. So some how my last post got deleted. I dont know what they they dont seem to be spraying fuel even though fuel is very present in the fuel rail I also got some blue to ones as well that came with the motor I just pup the pink ones in because the connectors fit them. I own a 1997 Ford F-150 4x4 with a 4. The stock fuel injectors do not have enough flow for safe reliable performance running e85. The injectors are driven by the ECU. The Microsquirt is the latest addition to the popular Megasquirt family. If the air flow meter is properly sized, the reduction in pulse width will cause the new, larger injectors to deliver the same amount of fuel as the stock injectors did at the original pulse width. Only thing you can really do on stock ecu and no piggy back, is get a RRFPR (Rising Rate Fuel Pressure Regulator) Which is used with stock injectors, and it raises the fuel pressure to the injectors as it see's boost. I am looking for input regarding which piggyback or other control system to choose. and is another. One oddity of the standard EFI computer (big port only?) is that below 6,000rpm it uses two injector pulses per engine revolution, (it's not a 'sequential' type of computer) and above that a single, longer pulse. , The secondary injectors activate based on driving conditions, and may be larger than the primary injectors. I prefer to get the correct injector size for what I have instead of getting bigger injectors than what I need and pay a tuner to make them work. Honda Fuel Injector Flow Rate/ Size Chart These injector flow rates are for informational use only, and to be used for setting up fuel parameters on our tunable ECU's only. Closed Loop Fueling. I can fit 1000cc Bosch , , 850cc Bosch, 650cc Bosch or standard injectors. I have yet to find a good thread for a stock-ecu boosted tib, but I have searched "blown up turbo tiburons" and came up blank. 8T Injectors - Performance - 440cc. Using Megasquirt as an EIC will require less rewiring, and will cost less since I can get junkyard injectors cheaply. Note: Each time you disconnect the battery or pull the ECU fuse, the ECU will reset itself back to its base settings again, and run rich on startup. Larger Injectors The aftermarket performance industry rates the capacity of port fuel injectors on a scale based on how many pounds of fuel per hour (lb/hr) the injector can pass while the pintle. I would love to see a back-to-back dyno pull with just bigger injectors, without any change to the MAF, cams, intake, or the tune. Staged injection allows the use of primary and secondary injectors of different sizes. As for running bigger injectors, the stock ecu can almost certainly handle bigger ones. Based on feedback from the snitches, the ECU learns to apply a correction factor to its commands to the fuel injectors. Ls1-- stock injectors--rated at what PSI Question about re-working the IFR table when going to a bigger injector--When a corvette injector is rated at 28 lbs from GM--Is that rating at the industry standard 3-bar (43. But beyond the first looks, chassis, seats, doors, exhaust, suspension, there are many upgrades to the Engine to gain this kind of stock power. hey guys i guess i just wanted to start this to see if anyone has seen gains, ran too lean, or any side affects from running bigger injectors on the stock ecu. With that said, making 300rwhp with the stock ecu/injectors "can" be done, "has" been done, and it does require quite a bit of additional fuel pressure (which effectively turns the 35lb injectors into ~42lb injectors). There is absolutly no gain in power by adding larger injectors if the stock injectors will flow enough fuel at 80% duty cycle. Average of 168. Why not replace the stock injectors with bigger ones instead of installing an extra injector?. But beyond the first looks, chassis, seats, doors, exhaust, suspension, there are many upgrades to the Engine to gain this kind of stock power. Average of 168. 5 - 12 lbs boost is the max you can safely run with larger (252cc) injectors. 2 BUT it's fuel curve is 17% larger so what does all this mean?. does anyone have any idea on what size would be best, and what brand. I have a choice of injectors for my 1jz drift car. ECU's in stock for most vehicle Makes and models, every ECU we supply is re-engineered to eliminate common factory faults enabling us to supply every ECU with an unlimited mileage LIFETIME warranty*. for anythign udner. When changing injectors in the AGU Me3. I'm running a little lean. The stock ECU is also completely limited to controlling injectors having the exact characteristics of the stock injectors (impedience, etc). Looking for a replacement injector for your 6. , The secondary injectors activate based on driving conditions, and may be larger than the primary injectors. This Formula calculates the amount the Fuel controller needs to decrease the airflow signal to the ECU to adjust for bigger Injectors: (Stock injectors/Current injectors - 1 ) * 100% = adjustment % For Example: If you have a TT with 360CC injectors stock and you switch to 580cc. Bigger injectors? This is a discussion on Bigger injectors? within the External Engine forums, part of the LSx Technical Help Section category; Need to know if I need bigger injectors or not? Got a 98 ss a4 (28lbs/hrstock inj. You say they are bigger? How mutch bigger? current is 250cc. You bought your new bike and are looking to improve the power and the sound. Genuine Driver Injector Ecu For Toyota Corolla Verso Oe No. Total for buying + installation of intake, injectors and raising boost to 7 psi - $445 Today I took the car to Maxi Muffler. The stock ECU is also completely limited to controlling injectors having the exact characteristics of the stock injectors (impedience, etc). The ECU, when running in open-loop (engine cold, or throttle input above a set limit), runs off of a fuel/ignition map not the O2 sensor(s). they are stock as I am running my stage two ecu at the moment. 3L owners looking for efficiency as well as a modest power increase. The stock injectors suppossedly can handle another 100hp with no problems so really there is no pluses to adding Supra injectors. On a stock fuel system and engine you will NOT be wanting to turn it up past ~14psi due to this being at/over the 90-95% IDC of the stock 360cc injectors. You will need 42% bigger injectors. We have found Honda ECUs work particularly well with larger injectors. Using the latest technology, this set of 8 fuel injectors will give your Mustang short pulse width repeatability, great linearity, and great drivability. 0t/Z20NET models so the next stage requires fitting bigger injectors and either a) fitting a 3" downpipe (d/p) and sport cat which would allow mapping to 230hp/370nm or b) swap the stock GT2052 turbo (and coolant line) for an Aero TD04-14t and map to 250hp/370nm. on a side note, I had to return my ECU to stock in order to get my car to pass smog. Here are some flow rates for different injector sizes. 8 combined) since July 2010. Same question though, does anyone know of a company than makes bigger injectors for the LTG engine? Just to save some of you some time, I plan on doing a big turbo build on my ats down the line, thats why im asking. 7:1 AF for any kind of cruising/idle etc. Click here to learn how to install LS1 injectors and rail. Make sure your injector duty cycles aren't close to 85% after the retune. However the stock ECU limits the injectors duty cycle to around.