C63 too quiet?
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Junior Member
Joined: Jun 2012
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From: Socal
2009 C63
C63 too quiet?
Hello, I currently have primary & secondary cat delete along with a resonator delete with x-pipe and stock mufflers. The car is crazy loud on cold start and WOT but after that it is very quiet at idle, even partial acceleration is not that loud. Is there something that is making the car so quiet?
Reason I am asking is I drove me friend's e92 M3 with a cat delete and exhaust, his car is extremely loud at idle, partial acceleration, etc. Even my old Evo X was louder at idle and partial acceleration.
Reason I am asking is I drove me friend's e92 M3 with a cat delete and exhaust, his car is extremely loud at idle, partial acceleration, etc. Even my old Evo X was louder at idle and partial acceleration.
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Joined: Nov 2011
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2012 C63 2015 C300 sport
i was actually just going to make a thread about this...also wondering...the car is damn loud at start up and accelerating but at idle its so quiet! I dont mind it most of the time but I think it would be cool if it idled a little louder. my friend just got a zl1 and that car idles real loud even though if I rev my car is way louder....
Senior Member
Joined: Aug 2011
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From: Richmond BC
2011 C63 Calcite White
I really think its the cams, I saw this M6 parked in an indoor parking before. Her idling was like loud as our cars stepping on it -.- freaking awesome but irritating after 5 min.
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Joined: May 2007
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From: Ontario, Canada
W204 C63 R171
When the car is starting up there is some sort of pump/device that's open... you'll notice after about 30 seconds to a min the rpm drops and it gets quite. Cams will help give you a more radical idle and a more of a vintage muscle car sound if they are setup to do so.
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Super Member
Joined: Aug 2012
Posts: 748
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From: Dubai
C63 AMG
WTF primary cat and secondary cat and resonator delete and not loud enough 
Did you have to do any ECU remap when you did the primary cat delete? Is there any oxygen sensors that set of warning lights and codes or?
Thanks
Did you have to do any ECU remap when you did the primary cat delete? Is there any oxygen sensors that set of warning lights and codes or?
Thanks
Senior Member
Joined: Aug 2011
Posts: 338
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From: Richmond BC
2011 C63 Calcite White
Maybe MBenz purposely made our cars idle quiet to keep the classiness.
Thread Starter
Junior Member
Joined: Jun 2012
Posts: 50
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From: Socal
2009 C63
You need to remap to get rid of the codes, my CEL is currently on because of the primary cat delete.
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C63 AMG
Even with headers it wont idle loud. But it will rattle your teeth and everyone around you at WOT and Cold star.
This isn't a 1969 Pontiac Firebird with a 455CI and aggressive cam.
Its a modern car with variable cam shafts. At cold start the exhaust cam is adjusted to let some of the unburned mixture into the exhaust so it warms up the cats quicker. At warm idle, the cams are adjusted for emissions and smoothness.
This isn't a 1969 Pontiac Firebird with a 455CI and aggressive cam.
Its a modern car with variable cam shafts. At cold start the exhaust cam is adjusted to let some of the unburned mixture into the exhaust so it warms up the cats quicker. At warm idle, the cams are adjusted for emissions and smoothness.
Last edited by Merc63; Feb 25, 2013 at 08:44 PM.
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From: Sydney
C63
