Renntech Exhaust...is it worth the money?
Thread Starter
Junior Member
Joined: Jan 2009
Posts: 36
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From: San Diego, CA
Mercedes Benz C55
Renntech Exhaust...is it worth the money?
Is the sound / performance difference really worth the money as apposed to getting some stainless magnaflow mufflers at $150 a pop then just paying for installation and piping from the cats back?
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Joined: Jul 2003
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From: Western Canada
2013 C63 AMG P31, 2014 GMC Sierra (6.2)
I would suggest you try removing the resonator first and see what you think of the sound. Many here have done this and absolutely love it! Very cheap and simple for any muffler shop to do! You can put the money you save towards some headers that will make it sound even better and give you a HP/TQ increase.....
Thread Starter
Junior Member
Joined: Jan 2009
Posts: 36
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From: San Diego, CA
Mercedes Benz C55
I think im going to do that today actually. Ill see how I like it then go from there. Is there any dynos that people have done before / after the Renntech exhaust system. I know they sound awesome but im still curious if theres a decent horsepower gain.
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Joined: Jul 2003
Posts: 1,687
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From: Western Canada
2013 C63 AMG P31, 2014 GMC Sierra (6.2)
purchased exhaust system for an AMG. Some owners like hooleyboy and others have custom made exhausts and have made gains that way. Most gains will be made via better headers, removing or getting different cats (IE 200 cel) and a good ECU tune that takes into consideration the exhaust flow.
Super Member
Joined: Apr 2007
Posts: 593
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From: Orange County
2019 AMG C43
Delete your resonators and secondary cats, i guarantee you will be plenty satisfied with the sound. If your ever inte OC area let me know, ill take you out in mine. It's alot louder vs stock
Junior Member
Joined: Apr 2009
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From: South Wales UK
C32 AMG
Not trying to hi jack your thread USMC...... question, does removing the secondary cat effect the EML light to come on !!!
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Senior Member
Joined: Jun 2007
Posts: 363
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From: Queens N.Y.C
C55 AMG
pm sent. i removed the resonator the secondary cat and the mufflers, with custom pipeing car is loud! but all for my next project.. 
Last edited by BLACKROOF C55; May 3, 2009 at 11:27 PM.
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From: California
2018 E63S AMG, 2003 SLK 230 Sport, 2004 SL 600, 2006 SLK 55 AMG, 1998 E320 Wagon
I'm in Laguna Niguel, so not too far off.
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From: Delran, NJ
05 C55
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From: Orange County
2019 AMG C43
Have you had any problems passing smog? I've got the C3P pulley, new Green filters, ECU tune, and res delete. I might be interested in hearing your car w/o the secondary cats if there isn't any problem there. Might want to do it myself.
I'm in Laguna Niguel, so not too far off.
I'm in Laguna Niguel, so not too far off.
If anyone is ever in my area feel free to let me know, ill be happy to give a demo of the exhaust set up
Took this video with my really old digital camera... sound quality blows
http://www.youtube.com/watch?v=aTKfeFUakK8
MBWorld Fanatic!
Joined: Jul 2007
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From: East Bay, Bay Area
2002 C32, 2012 S550
Have you had any problems passing smog? I've got the C3P pulley, new Green filters, ECU tune, and res delete. I might be interested in hearing your car w/o the secondary cats if there isn't any problem there. Might want to do it myself.
I'm in Laguna Niguel, so not too far off.
I'm in Laguna Niguel, so not too far off.
MBWorld Fanatic!
Joined: Feb 2006
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LET C32 2002
I would suggest you try removing the resonator first and see what you think of the sound. Many here have done this and absolutely love it! Very cheap and simple for any muffler shop to do! You can put the money you save towards some headers that will make it sound even better and give you a HP/TQ increase.....
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Joined: Jul 2007
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From: Livingston, California.
2002 c32 AMG 2012 c250 Coupe
if you have the money and want to do it, i say go for it.. i had the resonator removed but if i had the money to buy me an eissenman exhaust, i would do it..
Senior Member
Joined: Jun 2007
Posts: 363
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From: Queens N.Y.C
C55 AMG
MBWorld Fanatic!
Joined: Jul 2007
Posts: 1,013
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From: Livingston, California.
2002 c32 AMG 2012 c250 Coupe
i would love a rennetech but they dont make it for c32
