I got a 89 Camaro 5.7 iroc I need help tuning my TPI motor the air fuel ratio is off. So if anyone knows anyone that has a lot of knowledge on this situation let me know.

 

how do you know the air fuel is off was a wide band o2 put on it.

 

A Wide band O2 a heated O2 sensor? It has a low idle and its surging and its running rich.

 

what is your fuel pressure?

 

a wide band is not a heated o2 sensor. a wideband is better used for tuning. The normal guy is Mark Roman but something about him not wanting to do OBD1 cars anymore. you can get a custom chip made. or you can buy a programmer to do it yourself. But if you dont have many mods a chip problem may not fix your problem. sounds more like a fuel problem like Traviz said. Maybe a couple bad injectors. check you fuel pressure, then with key off see how fast the pressure bleeds off, if it bleeds off really fast you probably have leaking injectors.

 

Thanks for clarifying that yeah I talk to Mark a while ago about doing some work to my ecu. I didn't know he stop working on OBD1 cars. Yeah I might have to look into a custom chip or a programmer. Yeah I need to get this fuel problem taking care of for sure before I invest into a new cat converter.

 

That is what someone else said about him not doing OBD1 cars anymore I dont know if its true. I never talked to him. But if you have his # you can call him. But if the car has a mechanical problem the tune is not going to take care of it. But if you can get some info. on it from him it might be beneficial to fixing your problem.

 

After looking at your other threads I dont think you need a "tune", seems you have something wrong with your car.

 

yeah I looked back at what I wrote and I left out the word not. haha. the tune is not going to take care of his problem if he has some mechanical problem is what I was getting at. damn speed typing!

 

 

your such a smart a s s