kasper

Since my car is feeling less fast lately, I've been running some tests with dynolicious on ipad...
C55 kleemann s7+
Results are 386hp (with 18% drivetrain loss so about 330whp?) where it should have about 570hp...

I can hear my icpump running.
What else could it be?

Thanks

Newzchspy

I doubt its the IC. Depending on the Dyno, the HP is nowhere near what Kleemann advertises for the S7. 330 whp is probably a tad low. Alumar (Mike) and I have the same car and before he put on a smaller pulley, they dynoed within 5 hp of each other on the same dyno under near identical DA's. Still a very fast car and faster than 99% of whats on the road. Just don't tempt a modded C63. I don't fear stock C63s.

Do you have the Kleemann headers?? Ever get a dyno tune?? Check the MAF too

kasper

thanks for the fast reply

Yeah got the headers also
Didn't have a dyno tune

kasper

Maybe a stupid question,
but how can I check the MAF?

sinister55

a ob2 machine can check if the engine is throwing a code.

reflex92

+1

Newzchspy

The problem with the MAF on the Kleemann is that for some reason, it CAN go bad and not throw a code. You can only tell by driving it and/or replacing it?? Been there done that with the S7...... The MAF is a common issue with the Kleemanized S7 (just ask Mike and I !!).

Cory @ Kleemann

I'd suggest taking the car to a real chassis dyno to get power, torque and lambda ratio data before you start trying to diagnose. The Dynolicious app is neat, but it's by no means a substitute for a real chassis dyno. Just my .02