spitalul2bad wrote:That may well be the increases the manufacturers will say you get, however, in most than all cases those are best results, and do not go with every car. That is to say: they may be a bit much.
Secondly, there's a difference between rated HP (crank HP) and actual HP (wheel HP). All those moving parts, that put the engine's power on the road, make you lose some of it. With the Zs, it's between 14% - 17%.
Yeah, what the other guys said. Not to be a jerk, but first of all, there's HP increase and there's Schtealin' HP increase. Also, you can't add parts together and get a net gain of the sum total.
Put it this way, a properly installed *AND TUNED* supercharger with an aftercooler only adds about 25% to the wheels.
Stillen (Schtealin') is well known for tall tales. They aren't a performance company, they're a marketing company and they're damn good at it.