If you want a true comparison, why not put turbo on the E36 M3 or how about a turbo on the new E46 M3?! But as you can see, us M3 owners don't need turbo to spank a "TURBO" S4. And why is there so much hype about a souped up VW? What these S4losers don't realize is that it takes a turboed Audi to try to even compare to a normally aspirated M3. Take away the S4's turbo and you have a normally aspirated VW! Add turbo or a supercharger to an M3 vs a chipped S4 and it'll throw rubber and pebbles on the windshield of an S4. I've spanked 5 S4s that initiated a race with me so far. I've even had one try to race me on my R1! Wheelied past him in 3rd gear! Sorry I sound so angry but I was an S4 fan until they started talking shit.