Quote:
Originally Posted by '10Anamoly
I'm pretty sure the car has different ECU maps for use when the A/C compressor is on. The power you feel come back during WOT is the car switching maps. The timing, idle speed, etc are very different when the A/C compressor is on. Thus, who knows what power you do or dont lose, but its true that the compressor itself doesnt take up 15 hp.
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I don't think it's a different engine map.
It's the A/C clutch disengaging & putting less load on the engine. The compressors clutch is controlled by a pressure switch. It's cycling off & on every few seconds.
The temp control only controlls how much hot air is allowed to mix with the chilled air, it does not control how long the compressor stays on or off.