I have an 2002 boxster. When I use the AC or heat, I notice almost no change in anything. MAYBE I can hear more belts getting used, but I notice almost nothing affecting power.... well, accelleration is reduced slightly with AC, but I dont hear idles drop or anything.
Just my input from my vehicle, and I know almost nothing about cars
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2002 Porsche Boxster | 2022 Mercedes Benz GLC300 | 2003 Suzuki Hayabusa
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