Not happy with cat delete w/ x-pipe
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From: Boston, MA
2017 911, 2012 C63
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2013 C63
Just a black exterior because I am a glutton for punishment!
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From: Kitchener, ON
2010 C63 AMG
You don't legally need them anywhere in NA since they're past secondary O2. So hollowing out (if that's what you mean by drain) the secondary cats is a huge waste of effort.
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From: Kitchener, ON
2010 C63 AMG
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From: Eufaula, Al/Georgetown, GA
W213 E63S Wagon, W204 C63 P30(RIP), WK1 Grand Cherokee SRT8(RIP)
The x-pipe KILLS a LOT of sound in the exhaust due to cross canceling the exhaust pulses against each other....I replaced the reso with an x-pipe and it sounded like ****(like a 19yo's Z71 with 'pipes leaving high school)...never seen the reso cut open but have heard from numerous sources that it is an h-pipe internally...and to be honest I fully believe that the AMG bark does in fact come from the reso....when I put mine back in and before I removed the back boxes I got the bark back
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CLKBS
The x-pipe KILLS a LOT of sound in the exhaust due to cross canceling the exhaust pulses against each other....I replaced the reso with an x-pipe and it sounded like ****(like a 19yo's Z71 with 'pipes leaving high school)...never seen the reso cut open but have heard from numerous sources that it is an h-pipe internally...and to be honest I fully believe that the AMG bark does in fact come from the reso....when I put mine back in and before I removed the back boxes I got the bark back
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From: Stouffville (near Toronto), Ontario, Canada
'11 C63 P31, '06 Infiniti G35 Sedan (sold), '03 Nissan 350Z (R.I.P.), '15 Toyota Hylander
I'm going to try keeping the x-pipe (where the #2 cats were) and replacing the resonators with straights.
That's the recommendation of the guy who did the x-pipe in the first place, so I'm going to give it a try.
That's the recommendation of the guy who did the x-pipe in the first place, so I'm going to give it a try.
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AMGs
just remove your x-pipe ..replace them with straight pipes and keep the res then be done with it
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From: Eufaula, Al/Georgetown, GA
W213 E63S Wagon, W204 C63 P30(RIP), WK1 Grand Cherokee SRT8(RIP)
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From: MA
Mosselman 190E 16V+ C63S+ Abarth 595
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From: Eufaula, Al/Georgetown, GA
W213 E63S Wagon, W204 C63 P30(RIP), WK1 Grand Cherokee SRT8(RIP)
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From: Stouffville (near Toronto), Ontario, Canada
'11 C63 P31, '06 Infiniti G35 Sedan (sold), '03 Nissan 350Z (R.I.P.), '15 Toyota Hylander
Update... chickened out and went back to stock (ie removed the x-pipe and put back the secondary cats).
I'm WAY happier with the stock sound.
Chalk this one up to a bad idea.
I'm WAY happier with the stock sound.
Chalk this one up to a bad idea.
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C63 AMG
Straight pipe it all.
Eurocharged Canada likes to sell X Pipes because that's what they have pre-fab'd for install.
Straight pipe all the way back is the best overall sound / performance out of the stock AMG mufflers IMHO.
Eurocharged Canada likes to sell X Pipes because that's what they have pre-fab'd for install.
Straight pipe all the way back is the best overall sound / performance out of the stock AMG mufflers IMHO.
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From: USA
CL63 AMG
Memorial Drive lol ... Recognized that route immediately, done it a 100 times. 
Here's another video of secondary cats removed and replaced with straight pipes:
2013 Mercedes C63 AMG Exhaust Sound Secondary Cat Delete W204 M156 - YouTube
2013 Mercedes C63 AMG Exhaust Sound Secondary Cat Delete W204 M156 - YouTube
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2006 E55
Let me preface this by saying, sound volume, pitch etc varies from person to person depending on taste.
For me, an xpipe is a no-no on this motor because it kills the beautiful roar of the 6.2l. Secondly, the type of sound you want will dictate next steps. I wanted several notches louder, but stock sound. I went with Mike H pipe replacing the secondaries and his resonator delete pipes, which are straight pipes. I honestly couldn't be happier with the sound. The signature bark is still there, but the loudness makes it seem like it isn't there. It is fairly stock sounding on normal cruising, and a complete animal on half and definitely on WOT- which is exactly what I wanted. MY ONE AND ONLY DILEMMA NOW IS: should I do long tubes or not, which will make the car INSANELY loud , especially very cold starts.
others straight pipe everything and it's loud, but not for me.
To reiterate, it's all about personal taste. Good luck.
For me, an xpipe is a no-no on this motor because it kills the beautiful roar of the 6.2l. Secondly, the type of sound you want will dictate next steps. I wanted several notches louder, but stock sound. I went with Mike H pipe replacing the secondaries and his resonator delete pipes, which are straight pipes. I honestly couldn't be happier with the sound. The signature bark is still there, but the loudness makes it seem like it isn't there. It is fairly stock sounding on normal cruising, and a complete animal on half and definitely on WOT- which is exactly what I wanted. MY ONE AND ONLY DILEMMA NOW IS: should I do long tubes or not, which will make the car INSANELY loud , especially very cold starts.
others straight pipe everything and it's loud, but not for me.
To reiterate, it's all about personal taste. Good luck.
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From: Relocated
2010 Irridium Silver MB C63 AMG Sedan
In my opinion, I think those that said just remove the secondary cats are right on if you want just a louder version of classic AMG rumble. Removing 2nd cats and straight piping to resonators.
Keep resonators. It contains a small H pipe inside, for a reason. Keeps the classy, "still take your girl to the restaurant" but now a lot louder WOT bark.
If you want to still take the car out and valet, drive down the neighborhoods and downtowns, it keeps her nice and classy. Then when you hit straight ways, let her rip.
If you remove the resonator you are hacking up a high quality beautiful OEM exhaust and getting that cheap rasp. Our exhaust welding and quality material is second to none.
KEEP resonators. Just delete secondary cats.
Keep resonators. It contains a small H pipe inside, for a reason. Keeps the classy, "still take your girl to the restaurant" but now a lot louder WOT bark.
If you want to still take the car out and valet, drive down the neighborhoods and downtowns, it keeps her nice and classy. Then when you hit straight ways, let her rip.
If you remove the resonator you are hacking up a high quality beautiful OEM exhaust and getting that cheap rasp. Our exhaust welding and quality material is second to none.
KEEP resonators. Just delete secondary cats.
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Joined: Feb 2015
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From: Twin Cities
E63S AMG
In my opinion, I think those that said just remove the secondary cats are right on if you want just a louder version of classic AMG rumble. Removing 2nd cats and straight piping to resonators.
Keep resonators. It contains a small H pipe inside, for a reason. Keeps the classy, "still take your girl to the restaurant" but now a lot louder WOT bark.
If you want to still take the car out and valet, drive down the neighborhoods and downtowns, it keeps her nice and classy. Then when you hit straight ways, let her rip.
If you remove the resonator you are hacking up a high quality beautiful OEM exhaust and getting that cheap rasp. Our exhaust welding and quality material is second to none.
KEEP resonators. Just delete secondary cats.
Keep resonators. It contains a small H pipe inside, for a reason. Keeps the classy, "still take your girl to the restaurant" but now a lot louder WOT bark.
If you want to still take the car out and valet, drive down the neighborhoods and downtowns, it keeps her nice and classy. Then when you hit straight ways, let her rip.
If you remove the resonator you are hacking up a high quality beautiful OEM exhaust and getting that cheap rasp. Our exhaust welding and quality material is second to none.
KEEP resonators. Just delete secondary cats.
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Joined: Nov 2014
Posts: 2,575
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From: Olathe, KS
'13 C63 AMG P31
In my opinion, I think those that said just remove the secondary cats are right on if you want just a louder version of classic AMG rumble. Removing 2nd cats and straight piping to resonators.
Keep resonators. It contains a small H pipe inside, for a reason. Keeps the classy, "still take your girl to the restaurant" but now a lot louder WOT bark.
If you want to still take the car out and valet, drive down the neighborhoods and downtowns, it keeps her nice and classy. Then when you hit straight ways, let her rip.
If you remove the resonator you are hacking up a high quality beautiful OEM exhaust and getting that cheap rasp. Our exhaust welding and quality material is second to none.
KEEP resonators. Just delete secondary cats.
Keep resonators. It contains a small H pipe inside, for a reason. Keeps the classy, "still take your girl to the restaurant" but now a lot louder WOT bark.
If you want to still take the car out and valet, drive down the neighborhoods and downtowns, it keeps her nice and classy. Then when you hit straight ways, let her rip.
If you remove the resonator you are hacking up a high quality beautiful OEM exhaust and getting that cheap rasp. Our exhaust welding and quality material is second to none.
KEEP resonators. Just delete secondary cats.
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Joined: Nov 2015
Posts: 31
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2011 E63 P30
Yup. The stock resonator H-Pipe AND an X-Pipe makes very little sense.
I replaced the resonator with straight pipe and the sound was way too truck-like. Swapped in a small H-Pipe to match the one that's inside the resonator and was much happier.
I replaced the resonator with straight pipe and the sound was way too truck-like. Swapped in a small H-Pipe to match the one that's inside the resonator and was much happier.
