Mods for P31 C63 ?
 

Hello,

I have a relative who has a P31 C63 and what performance modifications do you suggest ?

I am not sure if he has an LSD, what would you suggest ?

We dont want it to be obnoxiously loud, a V8 German sound would be great and not the typical American Muscle very loud sound.

What are the headers that produce the highest HP, X-pipe, cat delete ?

Air filters, Ecu Tuning.

Has any one tried the Xtra Power S/C or Weistec ?

MHP Longtubes and mid pipe
K&N Filters with charcoal deletes
Tune from MHP, They have tuned fastest C63 cars in the world.

That right there will net you about 100rwhp and convert your C63 into a beast.

Am with chawkins

If you want headers that produce the most power be prepared to have a very loud C63!!
Since LTH's are catless they will produce alot of power and be very loud especially at WOT. Though companies like MBH offer a HFC option it will still be loud but will sacrifice some power.
There are alot of options out there like MBH, MHP, Gintani, etc...

As far as tunes go, I would highly recommend going with OE Tuning.
They have some of the fastest tune only 1/4 times along with one of the fastest recorded tune only 60-130mph times. As far as headers go, the choice is yours.

Depending on your budget I would add a Weistec Supercharger to the recommendations above. This will transform and move your car into a completely new league.

Weistec and Kleemann have just announced a partnership and I believe they have a dealer network in UAE. You might want to check that out.

Ken