The new exhaust looks good!

You said it pulls to redline now...bet you lost some low end torque!

Not to rain on your parade but for $900+ dollars I would have sent the ECU to Renntech and had the ECU reprogrammed. You would have gained 300+ rpms, extended the speed limiter and gained some hp/tq for about what you paid.

http://www.renntechmercedes.com/Chr_Cross.html

If looks and sound were what you were going for than it looks great...enjoy!