C219 CLS55 and CLS63, 2004-2010

Straight pipe or X pipe?

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Old 08-06-2018, 07:53 PM
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Mercedes Benz Cls55 AMG
Straight pipe or X pipe?

Hi fellas.

Recently bought a 2006 cls55 amg. The resonator was removed. I believe this is called ‘’resonator delete’’

My question is. What is best to do? X-pipe or straight pipe? I want something that sounds low tone like a low lion growl bu not toot loud, nothing too high pitch neither , etc.

What exaust set ups are recommended for this application? Any recommended brands that you guys could point me to?

Note: Catalyc converter will not be removed. I live in California. Emissions are strict.

Last edited by Joey213; 08-06-2018 at 08:22 PM.
Old 08-07-2018, 12:13 AM
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Mercedes Benz Cls55 AMG
After doing some research online I am removing secondary cats and resonator.

Wats the best piping for secondary cats? X-pipe or straight pipe?

same for resonator, straight pipe or x-pipe on the resonator?
Old 08-07-2018, 05:59 AM
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CLS55
Replce cats with X pipe for more exotic v8 sound or a H pipe which produces more standard american v8 muscle sound. The further forward the H or X pipe the better so if you removed cats then put it there..

There lowend torque gain from H pipe and more high end hp on x pipe so i went with x pipe coz already hard to get traction down low.

Put straight pipe instead of resonators.

When working on exhaust make sure they leave some room for exhaust to move as engine torques/twists under load. The engine twists towad the right of the car(passenger side USA).

Last edited by PieRat; 08-07-2018 at 06:03 AM.
Old 08-07-2018, 07:01 AM
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Mercedes Benz Cls55 AMG
Originally Posted by PieRat
Replce cats with X pipe for more exotic v8 sound or a H pipe which produces more standard american v8 muscle sound. The further forward the H or X pipe the better so if you removed cats then put it there..

There lowend torque gain from H pipe and more high end hp on x pipe so i went with x pipe coz already hard to get traction down low.

Put straight pipe instead of resonators.

When working on exhaust make sure they leave some room for exhaust to move as engine torques/twists under load. The engine twists towad the right of the car(passenger side USA).
so you are saying to replace resonators with straight pipes and secondary cats with x-pipes?
Old 08-07-2018, 07:05 AM
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Yep!
Old 08-07-2018, 11:50 AM
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Mercedes Benz Cls55 AMG
Originally Posted by PieRat
Yep!
ive seen set ups the other way around witch is straight pipes on the second cats and x pipe on resonator.

watt is the difference? This is kinda confusing.
Old 08-07-2018, 04:05 PM
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The car already came with the resonator removed with straight pipes. Now should I remove the secondary cats and install straight pipe or x pipe in there place?
Old 08-07-2018, 05:18 PM
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The X pipe and H pipes work best the closer to the engine they are. This helps with reducing the exhaust drone. People who put them where the resonators are only did so coz they dont want to remove secondaries.
Old 08-07-2018, 05:19 PM
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Yes id just rip out the secondary cats and replace with x pipe if i were you then hook it up to the straight pipe where resonstors used to be.
Old 08-07-2018, 09:52 PM
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Originally Posted by PieRat
Yes id just rip out the secondary cats and replace with x pipe if i were you then hook it up to the straight pipe where resonstors used to be.
ok cool I will do that.

witch x pipe do I buy to replace secondary cats though? Any recommendations? I see that magnaflow has a few.

Witch one should I buy?

this one

https://www.carid.com/magnaflow/stai...CABEgKI2_D_BwE

or this one


https://www.carid.com/magnaflow/stai...yABEgLLf_D_BwE
Old 08-08-2018, 06:39 PM
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Think u want next size up from 2.5 one
Old 08-09-2018, 08:47 AM
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Mercedes Benz Cls55 AMG
Originally Posted by PieRat
Think u want next size up from 2.5 one
i ordered the 2.5 size. Would that one work ok?

watt is the actual size pipe that I need to get for this application?

Last edited by Joey213; 08-09-2018 at 09:05 AM.
Old 08-09-2018, 06:11 PM
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Yes it'll be fine with the 2.5. Its 2.75 stock, I think most people go either 2.5 or 3.0.
Old 08-11-2018, 04:03 PM
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Good information, do either of you have headers or OE manifolds?
I am looking to do some exhaust work on my CLS 55 which is all stock currently.
Please post some sound clips when done..
Thanks in advance!
Old 08-11-2018, 10:03 PM
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Mercedes Benz Cls55 AMG
Originally Posted by PieRat
Yes it'll be fine with the 2.5. Its 2.75 stock, I think most people go either 2.5 or 3.0.
Will do the 3

i am also getting my mufflers deleted. Do I tell the shop to join both tip pipes to join the single straight pipe exhaust or just leave it cut out?

Last edited by Joey213; 08-11-2018 at 10:06 PM.
Old 08-11-2018, 10:06 PM
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Mercedes Benz Cls55 AMG
Originally Posted by CDC55AMG
Good information, do either of you have headers or OE manifolds?
I am looking to do some exhaust work on my CLS 55 which is all stock currently.
Please post some sound clips when done..
Thanks in advance!
from my research I will start with resonator delete and secondary cat delete

get an x pipe closest to the primary cats and straight pipe resonator delete.
Old 08-13-2018, 05:25 AM
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Just fitting a limited slip diff atm ill get u guys some sounds then.
Old 08-13-2018, 02:00 PM
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Originally Posted by PieRat
Just fitting a limited slip diff atm ill get u guys some sounds then.
Awesome thanks! Good luck with the LSD install!
Old 08-29-2018, 11:27 PM
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Here we go boys!

Old 08-30-2018, 10:32 PM
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Mercedes Benz Cls55 AMG
Originally Posted by PieRat
wow sounds nasty bro.

Hiw much HP are u putting down?
Old 08-30-2018, 10:35 PM
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Mercedes Benz Cls55 AMG

heres a vid with mufflers deleted, secondary cats deleted and resonator deleted

next I am doing needwings intake and MBH long tube headers.
Old 08-30-2018, 10:38 PM
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Skip the intake IMO, they have been proven to be a waste of money and in some cases even lose you power! Yeah longtubes will be nice! I think you should get a LSD rather than the intake..

I am around 500 whp.
Old 08-30-2018, 10:41 PM
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Mercedes Benz Cls55 AMG
Originally Posted by PieRat
Skip the intake IMO, they have been proven to be a waste of money and in some cases even lose you power! Yeah longtubes will be nice! I think you should get a LSD rather than the intake..

I am around 500 whp.
why skip the intake ? I already ordered it.

I think I am putting the mufflers back on because I think it’s going to be insanely louder with the headers on
Old 08-30-2018, 10:42 PM
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Originally Posted by PieRat
Skip the intake IMO, they have been proven to be a waste of money and in some cases even lose you power! Yeah longtubes will be nice! I think you should get a LSD rather than the intake..

I am around 500 whp.
wats an lsd?
Old 08-30-2018, 10:59 PM
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This guy was having issues with his collapsing from the vacuum the supercharger created above 5000rpm. https://mbworld.org/forums/w211-amg/...ml#post7540003 Keep in mind his wasn't a needwings it was FTP.

They've been proven to not add HP when people have tested them in the past and in some cases the performance intakes have caused reduced HP.. They do make your supercharger whine a lot more noticeable from what I can tell.

Maybe see if they will refund you or let you put it toward something else, like their killer chiller..

A LSD is Limited Slip Differential. A differential is what transfers the power from the drive shaft (coming out of the transmission) and splits it to the two rear wheels. Now the problem with CLS55 without performance package is they don't have a limited slip one, meaning that the power goes down the path of least resistance. Basically if a rear wheel loses grip and spins, all the power goes to that wheel, causing it to spin more and the other wheel to get no power. If you have a limited slip diff it makes it so the power is evenly split between the two wheels at all times (more or less).


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