More power from deleting resonator?
Thread Starter
Senior Member
Joined: Dec 2012
Posts: 290
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2013 C63 AMG Coupe
More power from deleting resonator?
So I have the mbh headers and swapped my h pipe (which I loved) for mbh 3" mids and x pipe.
I didn't notice any change in power at all. Just sound....mellowed it out a bit.
I then had my resonator (which has a factory built in h) cut out and replaced with 3" straight pipes.
There is a noticeable power difference here.
Anybody else notice this?
I didn't notice any change in power at all. Just sound....mellowed it out a bit.
I then had my resonator (which has a factory built in h) cut out and replaced with 3" straight pipes.
There is a noticeable power difference here.
Anybody else notice this?
MBWorld Fanatic!
Joined: Mar 2011
Posts: 1,601
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From: San Diego/San Francisco
AMG GLC63. Audi R8
No additional power. Resonator is completely flow through. You'll just get a less deeper rumble and more raspyness. If you want additional power delete the secondary cats. Or course the best power bang for the buck is a flash.
MBWorld Fanatic!
Joined: Mar 2007
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From: Sydney, Australia
Vath ML63 Brabus C63 SL63 CLK63BS C63BS
I personally think the optimism set up is: headers, sport cats in place of primaries, delete secondaries and leave or increase size of resonators to keep sound down then after market mufflers can the AMG ones sound to trumpet like with headers
MBWorld Fanatic!
Joined: Mar 2011
Posts: 1,601
Likes: 10
From: San Diego/San Francisco
AMG GLC63. Audi R8
Love to do it that way but visual smog inspection in California is brutal. You'd have to put all the stock stuff back on every two years to pass.
Last edited by DuaneC63; Jan 19, 2014 at 01:39 PM. Reason: spelling
Super Member
Joined: Sep 2012
Posts: 533
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C63 Coupe
I also had MBH headers with MBH x pipe and the car hauled *** ! I then added agency power cat back which is 2.75" mandrel bent with no kinks and smooth flow and the car def got faster on the top end after 5K. I'm still going down from 3.0 to 2.75 but it's much better then the stock 2.5. The problem with the stock exhaust is the kinks where it reduces To way below 2.5 and that kills flow if get mandrel bent pipes with no kinks I 100% believe you felt a difference in power especially top end now finish off the rest with 3" out and she'll rip. I just added revozport front intake scoops, carbonio air box and renntech 82mm throttle bodies and she is a demon uptop and pulls like a freight train ! More air in more air out = power !!!
