This car now has a 58mm Holley on it. Just wondering if this throttle body could cause a lean condition on start-up when the car is warmed-up? I read this: http://static.summitracing.com/globa...99r10020-2.pdf

but it didn't mention this as a potential problem.

Grasping at everything now with the problem....

 

Most likely its in the tune. You are talking about a gta w/ a 350 paxton super charger.
I'd also check the fuel pressure & bleed down rate.

 

You would sure think so, but the guy I got the car from just slapped this one on in place of the stock. His theory was the car could sure use a larger one with the supercharger. He then mentioned he was done messing with the car....then into my arms it went.

One thing stated repeatedly in the Paxton manual is that the system is designed to be used with the stock "chip" and not to use anything other than that.

Getting a fuel pressure gauge Tuesday, so I can double check.

 

Never had that problem with any of mine.
The engine will only draw what air it needs and the injectors will supply fuel as programmed
Any codes showing?

 

No codes...I sure wish there were some codes to lead me in the right direction at this point.