Just trying to find a definite answer on this. Ive read 15 and 17lb/hr. I cant remember what mine was on my 96 turbo cavalier. Ive forgot a lot since I moved on. But im now boosting my 96 2.2 s10 work truck lol

Thanks
Austin

96 Camaro A4 383 12.5:1, E85, Full suspension, Nitrous outlet plate kit, hooker headers and catback, 3800 circle D converter.

2002 Silverado LQ4 6.0 CAI, Long tube headers, 4" exhaust

1996 s10- 97 ECU and wiring, soon to be boosted daily driver.

i boosted my 98 s10 truck. it was a blast. the 98+ had the vortec head. the stock injectors were 19lbs in my 98. im unsure of the 97 and older but they have to be at least 17lbs. are those the side fed injectors? either way your going with boost so the stock injector size is irrelevant. if you do have the side fed you will have to redo the complete fuel system to accept the standard bosch injectors.

thanks, Back in 05 I was one of the first guys to do the side feed conversion on my cavalier, since then almost everyone has used my conversion with the 2200 rail

The problem with these motors is being unable to tune the 96-97 cars. Running a large injector in them is tough because you cant get them to idle or drive not in boost correctly. So your basically stuck running a 24lb injector at low pressure, with a FMU thats like 8 to 10:1 to make them flow without running a Stand alone system.

The reason I wanted the stock size injector was to figure out what pressure I need to idle my larger injectors at to make it run correctly.

96 Camaro A4 383 12.5:1, E85, Full suspension, Nitrous outlet plate kit, hooker headers and catback, 3800 circle D converter.

2002 Silverado LQ4 6.0 CAI, Long tube headers, 4" exhaust

1996 s10- 97 ECU and wiring, soon to be boosted daily driver.

do you have an adjustable fmu??if so you can set the idle first and use your 24lb inj .

would it be easier to run an extra injector controller setup and run the stock injectors and fuel system? assuming your going to have low boost.

this way the stock computer and injectors dont need to be messed with. the stock computer does its thing under normal non boosted operation and when the injector controller sees boost it adds more fuel to the system. you dont have to mess with an fmu or lowering your fuel pressure to compensate for larger injectors. i think this would be the best way to achieve better driveability.

i have an 06 cobalt and there are no tuning options except trifecta mail order tune. i tried it but i couldnt get the driveability i wanted so i made an extra injector controller setup with a custom intake and its been good since.

JOE L wrote:would it be easier to run an extra injector controller setup and run the stock injectors and fuel system? assuming your going to have low boost.

this way the stock computer and injectors dont need to be messed with. the stock computer does its thing under normal non boosted operation and when the injector controller sees boost it adds more fuel to the system. you dont have to mess with an fmu or lowering your fuel pressure to compensate for larger injectors. i think this would be the best way to achieve better driveability.

i have an 06 cobalt and there are no tuning options except trifecta mail order tune. i tried it but i couldnt get the driveability i wanted so i made an extra injector controller setup with a custom intake and its been good since.

Have any pictures of this or any information?

96 Camaro A4 383 12.5:1, E85, Full suspension, Nitrous outlet plate kit, hooker headers and catback, 3800 circle D converter.

2002 Silverado LQ4 6.0 CAI, Long tube headers, 4" exhaust

1996 s10- 97 ECU and wiring, soon to be boosted daily driver.

The goals on this thing are minimal. Its a complete budget deal just for the fact to do it lol

Its a small saab turbo 48/42, small saab factory intercooler. I will be running this at 5 PSI.

I would love to run the injector controller setup, I could pretty much just put a single large injector in the charge pipe ahead of the throttle body, or 2 injectors in the back of the intake evenly spaced between 2 runners and just weld bungs in. Is a separate regulator used for this? Im interested in giving this a shot.

96 Camaro A4 383 12.5:1, E85, Full suspension, Nitrous outlet plate kit, hooker headers and catback, 3800 circle D converter.

2002 Silverado LQ4 6.0 CAI, Long tube headers, 4" exhaust

1996 s10- 97 ECU and wiring, soon to be boosted daily driver.

Emry wrote:

JOE L wrote:would it be easier to run an extra injector controller setup and run the stock injectors and fuel system? assuming your going to have low boost.

this way the stock computer and injectors dont need to be messed with. the stock computer does its thing under normal non boosted operation and when the injector controller sees boost it adds more fuel to the system. you dont have to mess with an fmu or lowering your fuel pressure to compensate for larger injectors. i think this would be the best way to achieve better driveability.

i have an 06 cobalt and there are no tuning options except trifecta mail order tune. i tried it but i couldnt get the driveability i wanted so i made an extra injector controller setup with a custom intake and its been good since.

Have any pictures of this or any information?

i used the one in the link below for 199.00 but there are many others. i think holley has one for 179.00..

http://www.urdusa.com/p1260198003/URD-Six-Additional-Injector-Controller/product_info.html

Emry wrote:The goals on this thing are minimal. Its a complete budget deal just for the fact to do it lol

Its a small saab turbo 48/42, small saab factory intercooler. I will be running this at 5 PSI.

I would love to run the injector controller setup, I could pretty much just put a single large injector in the charge pipe ahead of the throttle body, or 2 injectors in the back of the intake evenly spaced between 2 runners and just weld bungs in. Is a separate regulator used for this? Im interested in giving this a shot.

that would work well. its been done many times before. back in the late 90's and early 00's the big supercharger manufacturers were using these for there supercharger kits. i saw this type of fuel setup used on many camaro/transam supercharger kits. they made a plate for the throttle body and it had 2-3 extra injectors in it. i made an intake manifold and ran an injector in each runner on my cobalt.

Do you have any pictures of it, or any links? Did you just watch your wideband and adjust from there? Any information on this thing would really help me out.

Thanks again man
Austin

96 Camaro A4 383 12.5:1, E85, Full suspension, Nitrous outlet plate kit, hooker headers and catback, 3800 circle D converter.

2002 Silverado LQ4 6.0 CAI, Long tube headers, 4" exhaust

1996 s10- 97 ECU and wiring, soon to be boosted daily driver.

i added the link to the one i bought above. i dont have any pics of it on my setup yet. you will need a laptop to program. you will need a wideband to monitor afr. the controller uses three inputs: tps, rpm, and boost reference. this allows you to produce a 3 dimensional fuel graph unlike some others that are only 2 dimensional. it has a built in map sensor so you just run a boost reference line to it. you can jumper off your tps sensor signal wire and then jump off your rpm signal wire at the ecm or cluster. then there is a power and a ground. only 4 wires to hook up plus a vacuum line. it can control 6 extra high impedence injectors and the connectors are standard bosch connectors.

The way to do it correctly would probably weld injector bungs in my intake runners and run 4 more injectors, but at 5 psi is this really needed? Im up in the air whether to run it behind the throttle body plate into the plenum area, or to run two 24 Lb injectors in the charge piping. Its a tough decision.

96 Camaro A4 383 12.5:1, E85, Full suspension, Nitrous outlet plate kit, hooker headers and catback, 3800 circle D converter.

2002 Silverado LQ4 6.0 CAI, Long tube headers, 4" exhaust

1996 s10- 97 ECU and wiring, soon to be boosted daily driver.

yes. the proper way would be to ad an injector in each runner but its not required. to save yourself some time and money you can run one or two in the boost pipe just before your throttle body. i have just enough fuel rail left from my build to make a 2 injector setup if you want it. i can mill the injector holes and tap the ends for 1/4" npt fittings in it for 50.00 if that works for you. all you would need would be injector bungs to weld into the boost pipe and have a fuel line made.

stock injector size is relevant to get the constant correct!!!