32krazy!, am I reading your post (above) correctly - you pulled 321rwhp & 317 rwtq, stock? That's a bit hard to believe... the VAST majority of M112 Kompressor motors seem to dyno in the 280ish range (give or take 10... but not 40). Those numbers would translate to around 390 hp at the crank, which is right in line with what's to be expected on a Stage 1 car.

You either have a factory freak motor, or maybe she wasn't stock - have you owned the car since new? Not uncommon for a previously-owned car to be modded, when you're talking SLK32/C32/SRT-6.

Anyway, JMHO.

Props to EC for a more aggressive tune than the competition, resulting in meaningful power gains to the OP's car. Should produce stout track results, I'd imagine.