I have a 94 cavalier that races 1/4 mile round track. We run in second gear. This is a obd1 car and have a custom made chip for this car. The rev limiter is supposed to be set at 7200 rpm. We have had the car dyno tested and the limiter still hits at 6500 rpm. I recently contacted the chip programmer, and he notified me that something else could be cutting out such as fuel or fire. So I basically upgraded the entire ignition system with plugs, wires and accel coils. This did not fix my problem. I have read about swapping this to obd2 but with this engine not having a cam sensor I did not know if this is even possible. I need to find a way to get a few hundred more rpm. Any input is appreciated. Thanks in advance for all answers.
There are often multiple rev clip settings in the program.
Most likely, one was just missed.
There is a 4-letter code on the chip (i.e. WXYZ). What is yours?
sig not found
Hey Racecar, send me your bin file i'll see if I have a working tunerpro definition so you can tune it out.
I suspect i do, as I have several for the 94 v8's and GM kept the same templates that year.
OH!!!!
How about my 94 T-10 (s10 for most of you...) Blazer?!
oh ya!
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
I have a 2.2 pontiac sunfire i just bought and the car and motor was built and a turbo added with an intercooler.
I had the ecu custom tuned flahed for 32lb injectors and it runs rough. and hesitates until i slowly depress the gas pedall to 3000rpm then after that it is smooth all the way to 6000rpm in neutral. It runs like crap according to the previous owner the car ran fine with the stock injectors.I checked all the ecu grounds are good.
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So i replaced the computer with another one still the same and did a crank relearn. I replaced the cranks sensor the map sensor the coil packs-the ignition module the fuel pump and the fuel pressure is good, and new plugs.
It runs like it has a bad missfire you can hear it through the exhaust .Compression is good. 135psi all 4 cylinders. I installed the stock injectors and the stock computer tune it wont even start. with that So i changed the injector value from 017760 to 09442 and it starts and hesistates if you quickly hit the throttle.But if you lightly depress the throttle it will rev smoothly all the way to 6000rpm. but it still runs like it has a bad missfire.The map sensor is stock and should run at idle until boost kicks in.
My question is why would it not run with the stock tune and injectors?Afr is 16.00 at idle the slowly richens like normal cars does. I looked at teh timing marks on the gears up top and they were dead on.
ANY HELP WOULD BE APPRCIATED . Thanks.
