Quote Originally Posted by Footefan52
The power that is "drained" from a supercharger is negligible. It is the same as running the air conditioning. When tuning a car it is important to run the car at maximum load to accomplish the optimal fuel maps. Therefor if your running a supercharger then it is getting the most smooth fuel map, which makes for bigger gains.
Wow i don't even know where to start with this statement. First off, a supercharger is WAY more parasitic than an a/c compressor. The amount of power needed to compress enough air to feed an engine is quite a bit more than the small amount of freon that is compressed. When tuning a car you want to tune a variety of conditions, part throttle and WOT both. Supercharging makes very little difference tuning wide and you certainly don't gain any power over turbo through the tuning methods for a s/c.