Quickvr4

Hi Guys,

I just did the secondary cat delete and added a X-Pipe. The cars powerband seems to be a lot different than before. It does feel like it lost power in the lower rpms. Did anyone else experience this same thing?

Thanks.

ghiaguy

removing back pressure will usually sacrifice low end torque for power later in the powerband. A tune would likely make the exhaust mod worthwhile.

arekux

tune makes a huge difference in power band, do a tune, res and 2nd cats removed will be more noticeable with tune.

ML63 AMG

It shouldn't if done properly. E best way to increase low end to mid range torque is upgrade your stock exhaust manifolds, nthey are highly restrictive. You can get headers now for only $499 on eBay now for your application:

http://www.ebay.com/itm/Mercedes-Ben...-/370589004815

Usually you make 25hp & TQ with headers on NA 55 AMG