Yeah, that dyno has been said not to be accurate.

 

i also found one of the s4 chipped

 

but in things i read about the s4 is the turbo spools at 1800 RPM so if i never shifted when the RPM would be dropping below that i would have no lag right? (plz help never had a turbo car except i drove a wrx but that had some lag unless u slam it)

 

When they say spool at 1800, yes the blades are turning, but not enough to throw u back in ur seat. Get a s/c. you will be glad u did it.

 

the only thing is that a s/c for my car is more than trading it in and buying a s4 and if i had a s/c then what? an exhaust and that about it for performance

 

Theres alot more you can do, exhaust, intake,light wheels, carbon fiber hood, work on weight reduction,cams, cam gears,highflow cats, theres alot, just gota use ur brain.

 

yea, about the brain thing i dont like having to use it.
But i will have to think about that one.

 

Yea there is plenty of options with the supercharger. One misconception most ppl have is that both the supercharger as well as apr s4's graphs above are CRANK hp, wheel hp numbers are abour 22% less.

 

But they will still both decrese the same amount so it doesn't matter as long as both cars hp is at the crank.

 

Those are weak numbers for a KO4 modded S4. They should be closer to 340 at the wheel.