Secondary cat delete questions...power loss? CEL? Raspy sound?
Thread Starter
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Joined: Aug 2011
Posts: 210
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'05 E55, '12 C63
Secondary cat delete questions...power loss? CEL? Raspy sound?
My car is going to the muffler shop next Monday and I'm torn whether I want to delete just the resonator (have C63 mufflers ready to go on) or delete both the resonator and secondary cat.
My concern with the secondaries is for a couple reasons:
1 - CEL/emissions
2- raspy sound - I DO NOT want a raspy sounding car, I want deep and throaty.
3- Power/tq loss down low.
My headers are stock and primaries still intact.
My setup is going to be sec and res delete with C63s or res delete and C63 mufflers.
I just don't want to lose daily driving needed tq down low and get a nasty raspy sound with the sec cat delete.
Any feedback from those who have deleted or have a combination or just one or the other?
TIA.......I want to be sure I do it right and get a deep sound before cutting and welding etc.
THANKS AGAIN!!
My concern with the secondaries is for a couple reasons:
1 - CEL/emissions
2- raspy sound - I DO NOT want a raspy sounding car, I want deep and throaty.
3- Power/tq loss down low.
My headers are stock and primaries still intact.
My setup is going to be sec and res delete with C63s or res delete and C63 mufflers.
I just don't want to lose daily driving needed tq down low and get a nasty raspy sound with the sec cat delete.
Any feedback from those who have deleted or have a combination or just one or the other?
TIA.......I want to be sure I do it right and get a deep sound before cutting and welding etc.
THANKS AGAIN!!
Super Member
Joined: May 2009
Posts: 511
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From: Orlando, FL
04 E55 AMG, 03 350z Track Built/Single Turbo
There are plenty of vids on the web of it. They haven't sounded raspy at all to me. Also, reviews state that you may lose a slight amount of torque down low (almost unpercievable) but noticeably gain some top end. That's a good thing considering the power band of a roots blown car.
I'm planning to do the same mod after my move next week, although I've also considering having a shop weld in some 3" Vibrant straight-through resonators in there to replace the restrictive stock ones.
I'm planning to do the same mod after my move next week, although I've also considering having a shop weld in some 3" Vibrant straight-through resonators in there to replace the restrictive stock ones.
Thread Starter
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Joined: Aug 2011
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'05 E55, '12 C63
Would deleting cats also affect AF? Would the car run more lean? I am guessing a tune would be needed for optimal benefit?
I am thinking just the res delete might be sufficient with the C63s. I do not want to lose down low tq as that's the best part about this car.
I am thinking just the res delete might be sufficient with the C63s. I do not want to lose down low tq as that's the best part about this car.
MBWorld Fanatic!
Joined: Jan 2011
Posts: 2,159
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2006 E55
I am deleting my resonator and throwing on C63 mufflers as well! Hopefully, the mufflers arrive this week or next.
I am not touching the cats at all, this setup will be loud enough for me and I don't want anymore (wife, son, neighbors waking up isn't exactly what I'm looking for with an exhaust setup).
Deleting your resonator along with the C63 mufflers is going to sound PERFECT. I don't think it gets better than this setup. I am leaving the rest of my exhaust stock (stock headers, stock prims, stock secnds).
The only other way would've been to get LTHs and throw the C63s on.
My .02
I am not touching the cats at all, this setup will be loud enough for me and I don't want anymore (wife, son, neighbors waking up isn't exactly what I'm looking for with an exhaust setup).
Deleting your resonator along with the C63 mufflers is going to sound PERFECT. I don't think it gets better than this setup. I am leaving the rest of my exhaust stock (stock headers, stock prims, stock secnds).
The only other way would've been to get LTHs and throw the C63s on.
My .02
Super Member
Joined: Oct 2013
Posts: 904
Likes: 41
From: Dallas
08 E63 AMG P30, 2013 S550, 09 E63, 14 E63 S Wagon, 14 E350 Wagon(current), 13 C63 P31 (current)
I am deleting my resonator and throwing on C63 mufflers as well! Hopefully, the mufflers arrive this week or next.
I am not touching the cats at all, this setup will be loud enough for me and I don't want anymore (wife, son, neighbors waking up isn't exactly what I'm looking for with an exhaust setup).
Deleting your resonator along with the C63 mufflers is going to sound PERFECT. I don't think it gets better than this setup. I am leaving the rest of my exhaust stock (stock headers, stock prims, stock secnds).
The only other way would've been to get LTHs and throw the C63s on.
My .02
I am not touching the cats at all, this setup will be loud enough for me and I don't want anymore (wife, son, neighbors waking up isn't exactly what I'm looking for with an exhaust setup).
Deleting your resonator along with the C63 mufflers is going to sound PERFECT. I don't think it gets better than this setup. I am leaving the rest of my exhaust stock (stock headers, stock prims, stock secnds).
The only other way would've been to get LTHs and throw the C63s on.
My .02
OP depends on your personal wants. but THIS is PERFECT.
Newbie
Joined: Nov 2012
Posts: 13
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Mercedes E55
I have primary and secodary delete and I get the raspasy sound in low RPMS once in high RPMS you don't hear it. I lost a **** load of back pressure as well. So I threw back on some 200 cats. It helped but not like stock. I also have kleenman headers.
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MBWorld Fanatic!
Joined: Jan 2005
Posts: 4,276
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From: Bay Area
2015 E63S, 2018 E63S
Sounds like you need a pulley to bring the boost back whether it be crankshaft or supercharger.
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Super Member
Joined: Nov 2012
Posts: 698
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From: Germany
C215 CL55 AMG, W124 500E, W210 E430, W124 300E
Why does one looses boost when he opens the engine up on the exhaust side???
I have secondary cats removed, X-Pipe after them and no resonators. Sounds perfect, no raspy at all.
Very deep and subtle on idle and on WOT pretty good - not super-loud like most guys want to achieve, but perfectly fitting for a V8.
However i have a CL55AMG, not a E55AMG....
I have secondary cats removed, X-Pipe after them and no resonators. Sounds perfect, no raspy at all.
Very deep and subtle on idle and on WOT pretty good - not super-loud like most guys want to achieve, but perfectly fitting for a V8.
However i have a CL55AMG, not a E55AMG....
Member
Joined: May 2013
Posts: 123
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2005 E55 AMG, 2012 GL550, 2000 Ford Lightning, 2005 Chevy Silverado 2500HD
Why does one looses boost when he opens the engine up on the exhaust side???
I have secondary cats removed, X-Pipe after them and no resonators. Sounds perfect, no raspy at all.
Very deep and subtle on idle and on WOT pretty good - not super-loud like most guys want to achieve, but perfectly fitting for a V8.
However i have a CL55AMG, not a E55AMG....
I have secondary cats removed, X-Pipe after them and no resonators. Sounds perfect, no raspy at all.
Very deep and subtle on idle and on WOT pretty good - not super-loud like most guys want to achieve, but perfectly fitting for a V8.
However i have a CL55AMG, not a E55AMG....
Member
Joined: Jul 2013
Posts: 214
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05 e55 amg
I have cats removed with headers with straight pipe it is raspy but I like it sounds mean now. with the c63 muffler car will be loud but depends how loud you like it it sounds good to me worst comes you throw them back on of it's too loud or raspy. Do you have headers ? And I wasn't aware that you loose power from doing this.
