Originally Posted by avery.whss

just the tune..my car put down around 400 stock..so I'm guessing I just have a "strong" build...I've seen threads where guys with stock c63s run like 340 then some guy runs 390 or 370...IDK why..maybe another member can chime in...but now I have some high flow airfilters (not sure if any gains probably not) and eurocharged tune on...probably going to buy that CF intake...they say you get 10-ish HP gain from it due to more airflow..I get the car dyno'd again in a few weeks so I'll report back with some more numbers...don't really wanna put headers or a exhaust on it because I live in a city full of old people who LOVE to ***** about the loudness of exhausts..plus everyone in my city drives some 4cyl car so when they hear some big V8 roar by i guess they get pissed

Originally Posted by Jons95c36amg

At first I had CEL issues with OE. But the latest file never have problems.
OE is stronger...C63 OE-tuned vs C63 Eurocharged tuned - YouTube