Just have this minor issue that only happens when my car is heat soaked, it is a super hot and humid day and I run the AC. I will punch it and the car will buck a little bit under boost, don't know what is actually occuring but thought the car might be rapidly pulling timing because of minor knock or something. If I turn the AC off and punch it, it is just fine. Car is low miles, plugs are fine, coils are new. Everything is in good shape, about 8 pounds of peak boost from the SC and the air to water intercooler is working as it should.


My question is what (besides a little drag from the compressor) is different when the AC is running that would cause this? I run a Emanage so I presume it is something the stock computer is seeing and making an adjustment, but what does the stock computer see differently when the AC is on?

On a side note, it is possible that I have air in the head after chagning the intake manifold gasket, and am do to do a drain and fill of the whole system shortly.


Thanks for any insight.

 

The tune adds fuel and rpm when the compressor is on if I remember right. Check in te emu software if there is controls for the ac. When I get home I'll check in aem cause I know there is stiff for it in there. I bet the car is flooding or leaning out for a sec and possibly knocking.

 

I do believe the AFR guage reads very fairly rich when this happens. High 10's.

 

possibly adjust the AC load comp in the aem software. I believe its under the fuel or setup tab