anyone regret removing the secondary cats?
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From: nj
a car that can't do the throttle reset.
anyone regret removing the secondary cats?
thinking about having mine hollowed out. Res. delete is nice, but a very very subtle change. Would like some more burble and start up boom. I fear it sounding civic'ish.
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From: Northwest Indiana/ Chicago
2006 C55 AMG, 2005 E55 AMG
When a 5.4 AMG V8 sounds civic'ish with removed cats, that's the day I move on from AMG. Delete the secondary cats... You wont regret anything. No CEL lights, no drawbacks, just a better sound.
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Toyota
I mean the last thing you'd want to do is devote a lot of time an energy to something and then realize that you don't really want it.
Last edited by Vitor'sIphone; Nov 19, 2013 at 10:37 AM.
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Mercedes CL
Pointman may be committed to sticking with the car for a decade and then claim that the engine died on it.
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2006 C55 AMG, 2005 E55 AMG
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C55 AMG, 300D-T & Karmann Ghia
Lucky!!! I have family in Plainfield, IN, they rub the easy/non-existent emissions rules in all the time. If I lived there I would have headers in a second!!
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2006 c55 amg
I'm taking mine in Friday morning to have the res delete. After reading this,I may have the secondary cats taking off as well. My muffler guy said something about putting cherry bombs on it. Wtf
Wonder how loud that would be? LOL
Wonder how loud that would be? LOL
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1999 E320 4matic Wagon, 2005 C55 AMG - sold, 1998 VW Jetta TDI - sold, 2006 C230 Sport - Totaled :(
I haven't done this to my C55 yet, but I knew someone who did and I heard it from outside as well as drove the car. Removal of resonator and secondary cats and it sounded PERFECT. Had a nice loud rumble, but also sounded very nice and wasn't obnoxious at all. I'm going to have my secondary cats and res removed sometime next month 
There is a small amount of cabin drone, but if you want to do anything that is worth it to your exhaust, you're going to have to accept that. However, I personally like the sound because it's not really too loud and annoying and it makes your car sound good.
I don't have to worry about emissions where my car is registered in VA (not req'd) so can't shed any light on that part.
There is a small amount of cabin drone, but if you want to do anything that is worth it to your exhaust, you're going to have to accept that. However, I personally like the sound because it's not really too loud and annoying and it makes your car sound good.
I don't have to worry about emissions where my car is registered in VA (not req'd) so can't shed any light on that part.
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C55 AMG, 300D-T & Karmann Ghia
music to my ears. After I pass I am going to treat myself with dual exhaust w/ an x-pipe. ..Who can comment on the experience going from simple deleted resonator/secondaries stock Y pipe to a true duals with x-pipe? Is it worth it?
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1999 E320 4matic Wagon, 2005 C55 AMG - sold, 1998 VW Jetta TDI - sold, 2006 C230 Sport - Totaled :(
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C55 AMG, 300D-T & Karmann Ghia
Just to denote from stock dual exhaust outlet- I would consider anything replacing the stock Y pipe section with two individual pipes true duals. I never thought of an x-pipe for exhaust bank harmony (and greater performance) as cancelling out the dual exhaust, but technically I suppose they are no longer fully independent.
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From: AZ
C32, C55, 08 E63
Just to denote from stock dual exhaust outlet- I would consider anything replacing the stock Y pipe section with two individual pipes true duals. I never thought of an x-pipe for exhaust bank harmony (and greater performance) as cancelling out the dual exhaust, but technically I suppose they are no longer fully independent.
I've wondered if anybody has left the resonator and the secondary cats in and removed the mufflers and gone with straight pipes?
Probably would equate to too much drone but i've been thinking about doing it. I'll probably end up just doing the resonator and secondary cat deletes.
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c55
Just because there's an X pipe in there doesnt take away from it being a true dual exhaust. Most high performance cars with dual exhaust have X pipes for the very reason you specified.
I've wondered if anybody has left the resonator and the secondary cats in and removed the mufflers and gone with straight pipes?
Probably would equate to too much drone but i've been thinking about doing it. I'll probably end up just doing the resonator and secondary cat deletes.
I've wondered if anybody has left the resonator and the secondary cats in and removed the mufflers and gone with straight pipes?
Probably would equate to too much drone but i've been thinking about doing it. I'll probably end up just doing the resonator and secondary cat deletes.
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From: SF Bay Area
C55 AMG, 300D-T & Karmann Ghia
Yesss... so badass
https://mbworld.org/forums/c32-amg-c...haust-mod.html
https://mbworld.org/forums/c32-amg-c...haust-mod.html
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From: Canada
eclectic assortment of cars
I haven't done this to my C55 yet, but I knew someone who did and I heard it from outside as well as drove the car. Removal of resonator and secondary cats and it sounded PERFECT. Had a nice loud rumble, but also sounded very nice and wasn't obnoxious at all. I'm going to have my secondary cats and res removed sometime next month
There is a small amount of cabin drone, but if you want to do anything that is worth it to your exhaust, you're going to have to accept that. However, I personally like the sound because it's not really too loud and annoying and it makes your car sound good.
I don't have to worry about emissions where my car is registered in VA (not req'd) so can't shed any light on that part.
There is a small amount of cabin drone, but if you want to do anything that is worth it to your exhaust, you're going to have to accept that. However, I personally like the sound because it's not really too loud and annoying and it makes your car sound good.
I don't have to worry about emissions where my car is registered in VA (not req'd) so can't shed any light on that part.
Back in June, we went on a 1000km+ road trip (documented here: https://mbworld.org/forums/c32-amg-c...road-trip.html) and neither my wife, nor our then 1 year old baby girl complained at all.
On another 55 car, I would do it again in a heartbeat. Mind you, we don't test emissions here, so that's not really a concern for me. If I was concerned about the environment, I wouldn't have two V8s in the garage....
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2006 c55 amg
I'm having it done tomorrow. Hopefully I won't be disappointed. I've always had exhausts on pretty much everything I've owned but getting to the age now where I don't want it to be too loud...LOL
Saaboteur,
Is the noise very loud just cruising around town & on the highway? I put most of my miles back and forth to work. 15 miles round trip. But do go on alot of Dragon Tail runs, long weekends, ect.
Saaboteur,
Is the noise very loud just cruising around town & on the highway? I put most of my miles back and forth to work. 15 miles round trip. But do go on alot of Dragon Tail runs, long weekends, ect.
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Joined: Jun 2013
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From: El Paso, Texas
2005 Ferrari F430, 2006 E55 AMG, 2005 C55 AMG (Sold), 2001 E430
Ive been thinking of removing those secondary cats; but I allready have Kleemann Headers/Primary Cats del/Resonator Delete. The sound is Awesome as is. I'm guessing taking out the secondaries will just make everything louder???
