That is impressive. You have to wonder whether mods that raise the boost on the turbo's will affect engine reliability in the long term if the person is always driving aggressively. Turbo Audi's have always gotten very good results too with simple ECU tuning.

On another note, maybe I should be thinking of getting the mods necessary to bring my C55's power up to 400HP like the SLK55 Black Series.....can't have these modified 335's blow me away from a stoplight or on the highway. No wait, maybe I'll just get a Kleeman Supercharger and enter into supercar territory acceleration...

Bottom line: modding never ends and the comparisons become distorted when you mix modified and stock cars together.