451stroker

I have an LS1 in a 1981 Trans Am. I originally ran the car with a modified Camaro harness and a computer programmed by PCMForLess. The car never ran right and the harness had an intermitant short. I decided to stop being cheap and bought a harness from Street & Performance and also let them reprogram my PCM. Long story short, the car still doesn't run right. It idles kind of rough, runs rich, and stalls when it is put into gear. The only way I can keep the car running in gear is to unplug the power brake booster. This really has me stumped. Am I not getting enough vacuum? Does anyone know how much vacuum the MAP sensor needs? I also have 2 used O2 sensors, but both seem to be okay when I use my OTC scanner. Also, I am not getting any trouble codes. The cam is similar to LS6 specs, so it's nothing radical.

Any help on what to look for would be greatly appreciated.

Thanks!

John

DaddySS

If you don't have scan/tune software you'll need to take it to someone who does.