I think it is more then 5 at peak, even if it is, the C3's were something like 50hp over stock at 7500 rpms. So they definantly have a huge highend, much more so then the S4's. Of course you use some low end and idle so it really depends what you want out of your car. Lee > > im trying to decide if its really worth it. From the dyno charts ive seen > > the difference between c2/c3 combo vs s4 is ~5hp CMIIW.