Greeting...
Currently tuning a 2005 GTO with...
LS9 cam
Maggie M112 blower
No matter what I do, whether I load a 1-bar or 2-bar OS, when running 2-bar map sensor (GM 12615136), the car barely will start. And when I do get it started, the scanner says its idling at 104 KPA. Snap the throttle and it comes down to maybe 70 KPA and back to 104 it goes. I used the linear and offset setting from a 2005 or 2006 Cobalt SS. If I put stock settings back in the computer (even with the 2 bar map), the car starts and idles fine. And shows around 40-50 KPA.
What gives? I want the ECM to AT LEAST know the proper KPA being supplied to the engine. Ive NEVER had this issue with E38s (1-bar or 2.5-bar).
Thanks in advance!