Hi team,

Random question.

My car has a basic allmotor setup with I/H/E tuned on Crome.

We all know the A/C affects power as it's driven off the crank. But my big question is does it affect your tune? As with the A/C on there is more load? The reason i ask is with my A/C on in light to medium throttle i can hear some minor detonation/pinging but when A/C is off there is no pinging.

Please advise thanks.






Please advise

 

More load more chance of pinging get it tuned

 

Its been road and dyno tuned. What im asking is does the ECU make compensation to the map when the A/C is on?

 

The only change it should need to make is to raise the idle a touch so that the car doesn't stall

There is no difference in air flow across the engine, so you fuel and timing requirements should not need to change

 

A logical guess would be that the portion of the map that it is going to from the load difference of the A/C isn't tuned worth a crap. Sounds like a sub par tune.