Car is LOUD after AP header and midpipe
10-24-2018, 02:14 PM
#1
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Thread Starter
Car is LOUD after AP header and midpipe
So I just had a set of AP headers and mid-pipes installed and although I love the new found power, the cold start up is startlingly loud. These headers delete both sets of cats but retain the resonators and catback.
What can I do to quiet the car down while retaining the new found power?
I was thinking perhaps an X-pipe and high flow cats, or perhaps even a quieter cat-back if one exists?
Any ideas?
Thanks in advance!
What can I do to quiet the car down while retaining the new found power?
I was thinking perhaps an X-pipe and high flow cats, or perhaps even a quieter cat-back if one exists?
Any ideas?
Thanks in advance!
10-24-2018, 03:03 PM
#3
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2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
Yeah, no **** Sherlock
You can put in high-flow primary cats and 4 x-pipes, but it's still going to be loud as ***.
Good luck
You can put in high-flow primary cats and 4 x-pipes, but it's still going to be loud as ***.
Good luck
10-24-2018, 03:34 PM
#4
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2010 C300 4MATIC........ 2011 C63 AMG.............. 2015 CLS400 4MATIC.....
So I just had a set of AP headers and mid-pipes installed and although I love the new found power, the cold start up is startlingly loud. These headers delete both sets of cats but retain the resonators and catback.
What can I do to quiet the car down while retaining the new found power?
I was thinking perhaps an X-pipe and high flow cats, or perhaps even a quieter cat-back if one exists?
Any ideas?
Thanks in advance!
What can I do to quiet the car down while retaining the new found power?
I was thinking perhaps an X-pipe and high flow cats, or perhaps even a quieter cat-back if one exists?
Any ideas?
Thanks in advance!
Anyways if it's tuned eurocharged might still do the cold start delete.
10-24-2018, 03:51 PM
#5
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10-24-2018, 04:31 PM
#6
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12 C63BS Magno Alanite Grey, 22 X3M Brooklyn Grey, 08 BMW E93, 22 Ducati Desert Sled, John Deere 3R
I feel like it is common knowledge also and I don't think the cold start delete will help much. I paid eurocharged for the cold start delete but didn't get what I expected as it was poorly explained to me.
It will not delete the rev at all when you start the car, so you will still get the bit roar like you gave the gas pedal a good stab, what it will delete is the higher idle after the rev that settles down a bit after a minute.
So you get the big rev and then it will go right to 600rpm idle - should be called the high idle delete maybe - so will be better but probably not remove the loudest part that you might want to fix.
It will not delete the rev at all when you start the car, so you will still get the bit roar like you gave the gas pedal a good stab, what it will delete is the higher idle after the rev that settles down a bit after a minute.
So you get the big rev and then it will go right to 600rpm idle - should be called the high idle delete maybe - so will be better but probably not remove the loudest part that you might want to fix.
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hachiroku (10-25-2018)
10-24-2018, 05:02 PM
#7
So I just had a set of AP headers and mid-pipes installed and although I love the new found power, the cold start up is startlingly loud. These headers delete both sets of cats but retain the resonators and catback.
What can I do to quiet the car down while retaining the new found power?
I was thinking perhaps an X-pipe and high flow cats, or perhaps even a quieter cat-back if one exists?
Any ideas?
Thanks in advance!
What can I do to quiet the car down while retaining the new found power?
I was thinking perhaps an X-pipe and high flow cats, or perhaps even a quieter cat-back if one exists?
Any ideas?
Thanks in advance!
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10-24-2018, 05:14 PM
#8
SAVAGE cold start is one of the BEST ways to start any morning!
An ez way to reduce the cold startup scream is find/make 2 boxes tall enough/wide enough to surround both sets of exhaust tips, and line boxes with sound proofing material.
An ez way to reduce the cold startup scream is find/make 2 boxes tall enough/wide enough to surround both sets of exhaust tips, and line boxes with sound proofing material.
Last edited by MBNRG; 10-25-2018 at 07:19 AM.
10-24-2018, 07:27 PM
#10
MBWorld Fanatic!
My car had MBH long tubes, 200 cell cats, straight pipe, no resonator, factory mufflers, and it was ridiculously loud on cold start. It was just loud in general and did not sound good except at wide open throttle.
I had a custom X pipe made right after the cats and it quieted down the car in a major way. Still has a loud cold start, but nothing like before.
I had a custom X pipe made right after the cats and it quieted down the car in a major way. Still has a loud cold start, but nothing like before.
10-24-2018, 07:57 PM
#11
Junior Member
Thread Starter
I feel like it is common knowledge also and I don't think the cold start delete will help much. I paid eurocharged for the cold start delete but didn't get what I expected as it was poorly explained to me.
It will not delete the rev at all when you start the car, so you will still get the bit roar like you gave the gas pedal a good stab, what it will delete is the higher idle after the rev that settles down a bit after a minute.
So you get the big rev and then it will go right to 600rpm idle - should be called the high idle delete maybe - so will be better but probably not remove the loudest part that you might want to fix.
It will not delete the rev at all when you start the car, so you will still get the bit roar like you gave the gas pedal a good stab, what it will delete is the higher idle after the rev that settles down a bit after a minute.
So you get the big rev and then it will go right to 600rpm idle - should be called the high idle delete maybe - so will be better but probably not remove the loudest part that you might want to fix.
10-24-2018, 07:59 PM
#12
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Thread Starter
10-25-2018, 04:31 AM
#13
Senior Member
X pipes sound like garbage. Do some digging on the forum, there are extensive threads with video clips and many earlier members experimented with things including myself. Check out my old c63 with the custom silencers and balance pipe. Made it sound exactly what I wanted, didn’t lose any power, my cold starts stopped waking up the neighborhood unless I opened her up, but everyone has different taste. Good luck
10-25-2018, 04:43 AM
#14
MBWorld Fanatic!
Get a pair of variable exhaust flanges and have them shut when you start the car....should make a very notable difference in the bark. You can then electronically (or manually via a lever in the cabin) open the valves when your engine warms up and engages VTEC.
Gosh I had my headers swapped out back to stock last week. I forgot how good the car sounds stock and how terrible it sounded with headers. I do however miss the power a little.
Gosh I had my headers swapped out back to stock last week. I forgot how good the car sounds stock and how terrible it sounded with headers. I do however miss the power a little.
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saildoc (10-25-2018)
10-25-2018, 07:32 AM
#15
Member
played around and spent an unnecessary amount of money to summarize what the forum already shared:
1. Akrapovic System (Sounds very tame)
2. Remus Cat Back (Almost stock like mikes power pipes and secondary cat delete)
3. Eisenmann Sport Cat Back (This is what i am on now)
4. Weld in two cats to your existing system. I did this with a set of Meisterschaft Axel Back titanium mufflers, and this was by far my favorite setup! Unfortunately i moved and my new neighbors weren't so happy.
5. A buddy of mine did AP Valved exhaust which quietened the exhaust down with flaps closed, but i could not stand the rattles that the valved made. Hence i didn't want to go valved.
*All above options paired with Long Tube Headers.
1. Akrapovic System (Sounds very tame)
2. Remus Cat Back (Almost stock like mikes power pipes and secondary cat delete)
3. Eisenmann Sport Cat Back (This is what i am on now)
4. Weld in two cats to your existing system. I did this with a set of Meisterschaft Axel Back titanium mufflers, and this was by far my favorite setup! Unfortunately i moved and my new neighbors weren't so happy.
5. A buddy of mine did AP Valved exhaust which quietened the exhaust down with flaps closed, but i could not stand the rattles that the valved made. Hence i didn't want to go valved.
*All above options paired with Long Tube Headers.
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INS1GNIA (10-28-2018)
10-25-2018, 01:34 PM
#18
Junior Member
I feel like it is common knowledge also and I don't think the cold start delete will help much. I paid eurocharged for the cold start delete but didn't get what I expected as it was poorly explained to me.
It will not delete the rev at all when you start the car, so you will still get the bit roar like you gave the gas pedal a good stab, what it will delete is the higher idle after the rev that settles down a bit after a minute.
So you get the big rev and then it will go right to 600rpm idle - should be called the high idle delete maybe - so will be better but probably not remove the loudest part that you might want to fix.
It will not delete the rev at all when you start the car, so you will still get the bit roar like you gave the gas pedal a good stab, what it will delete is the higher idle after the rev that settles down a bit after a minute.
So you get the big rev and then it will go right to 600rpm idle - should be called the high idle delete maybe - so will be better but probably not remove the loudest part that you might want to fix.
10-26-2018, 01:17 AM
#19
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I have the same set up as you and i installed a magnaflow resonator and it quitened it right down. It didnt last long for me though as it took away the amg noise soo back to stock resonator i went
10-27-2018, 11:40 AM
#20
Junior Member
Thread Starter
Right now I’m leaning towards 300 cell high flow cats. Just not sure where to have them welded in.
Last edited by CanadianC63; 10-27-2018 at 11:43 AM.
10-27-2018, 11:44 AM
#21
Junior Member
Thread Starter
played around and spent an unnecessary amount of money to summarize what the forum already shared:
1. Akrapovic System (Sounds very tame)
2. Remus Cat Back (Almost stock like mikes power pipes and secondary cat delete)
3. Eisenmann Sport Cat Back (This is what i am on now)
4. Weld in two cats to your existing system. I did this with a set of Meisterschaft Axel Back titanium mufflers, and this was by far my favorite setup! Unfortunately i moved and my new neighbors weren't so happy.
5. A buddy of mine did AP Valved exhaust which quietened the exhaust down with flaps closed, but i could not stand the rattles that the valved made. Hence i didn't want to go valved.
*All above options paired with Long Tube Headers.
1. Akrapovic System (Sounds very tame)
2. Remus Cat Back (Almost stock like mikes power pipes and secondary cat delete)
3. Eisenmann Sport Cat Back (This is what i am on now)
4. Weld in two cats to your existing system. I did this with a set of Meisterschaft Axel Back titanium mufflers, and this was by far my favorite setup! Unfortunately i moved and my new neighbors weren't so happy.
5. A buddy of mine did AP Valved exhaust which quietened the exhaust down with flaps closed, but i could not stand the rattles that the valved made. Hence i didn't want to go valved.
*All above options paired with Long Tube Headers.
10-28-2018, 04:41 PM
#22
MBWorld Fanatic!
I have MBH LTH, 200 cell cats, MBH mid section w/ X pipe, resonator, and stock mufflers. My cold start is loud, my idle sounds stock, and the car sounds fantastic throughout the entire RPM range. I have no droning and if you are cruising you can barely hear it. If you go WOT it is L O U D!!! IMO my setup is perfect, quiet when I want it to be, crazy loud when I'm on it.
10-28-2018, 06:11 PM
#23
Junior Member
Thread Starter
I have MBH LTH, 200 cell cats, MBH mid section w/ X pipe, resonator, and stock mufflers. My cold start is loud, my idle sounds stock, and the car sounds fantastic throughout the entire RPM range. I have no droning and if you are cruising you can barely hear it. If you go WOT it is L O U D!!! IMO my setup is perfect, quiet when I want it to be, crazy loud when I'm on it.
I can can deal with the noise post start up. It’s the gunshot startup that is not appropriate for my neighborhood.
Would you you have a video of a cold start?
10-28-2018, 06:31 PM
#24
MBWorld Fanatic!
Do you have a garage? I just start my car with the garage shut and then IMMEDIATELY open the garage. That way that initial BANG is contained inside and then the door is open so I don’t kill myself. I also have the car backed in so the sound isn’t going out towards the street. No one ever complains about it.
10-28-2018, 06:55 PM
#25
MBWorld Fanatic!
cold start is still very loud although I'm betting not as loud as yours. I will post a video tomorrow but I bet it won't do it justice.
