xtomaszekx

Im looking to buy an xpipe for my mercedes, what diameter is an exhaust? 2.25 or 2.5?

Thx!!

MBSebas87

2.25...I got mine off amazon. $100 for magnaflow one!

jonUF02

Any sound clips with just the MagnaFlow x-pipe replacing the resonator? I intend to do some exhaust mod in the next week or so. This is wayyyy too quiet for a big V8. I did the 2nd cat delete only on my CLK and it was just right, but I can't decide which to try first. It seems everyone wants a snarling beast with no mufflers, but I want just a little sound when I rev it, and still very quiet while cruising.

Juice1979

I just went thru this recently. If you are looking to increase the sound do not do an xpipe. I replaced both resonators with an xpipe and my car sounded the same as stock. I changed it out for straight pipe and got deeper than stock sound. not loud at all. Save yourself the time and money and get straight pipes to replace the resonator. the factory mufflers on our cars are very very quiet.

jonUF02

OK, I think I'll start by replacing the rear large resonator with straight pipes. If too loud or drone, then I'll have X-pipe put in place of those. If not loud enough I might remove the "secondary cats" as well. I'll post sound clips when I get each done.

Juice1979

My car did not have secondary cats, only 2 resonators. I removed both and replaced with straight pipe. From the inside of the cabin while driving you wont even know you changed anything. Sounds identical to stock.

J.M.G.

The Exhaust on the 2010-2011 5.5 V8 N/A is the same as the one used in the 2012-2013 4.7 V8 TwinTurbo. The mid resonator is basically an empty chamber, with two entries and two exits. So the exhaust gas comes from each bank into that resonator and mixes with the gas from the other bank. This results into a very quiet and mellow sound. The E63 exhaust on the other hand has a totally different setup. It uses a mid resonator which consists of two perforated straight pipes which are connected through an H-pipe.

This gives the car a deep und rumbling sound which is not too loud at all:

jonUF02

So this setup from E63 is not loud inside the car? Do you think it has more to do with the end mufflers though?

I haven't had a good look at it, but I understand the stock E550 has the central resonator you describe, and also the 2 individual forward resonators, which look like secondary cats, but are really just empty baffled chambers.

Maybe I'll get the large center resonator replaced with straight pipes, but add the H center connection. I think that should be enough for a little bit of sound, vs. the stock which is extremely silent.

J.M.G.

The complete rear exhaust consists of the mid resonator and both rear resonators. I simpley pulled that complete system from the car and replaced it with the AMG one, without touching the pipes coming from the turbos. So I do not know, which effect it would make to play with those downpipes. Also I do not know, which effect it would make when replacing the rear mufflers with straight pipes.

What I do like about the E63 exhaust: Absolutely no drone at any RPM! It is also pretty silent a low cruising speeds (up to ~75 to 100mph).

BlownS4

Johannes,
How much did the exhaust run you, or did you find a used system from someone who upgraded their 63? also does it have to be the piping from an turbo 63 or will one from a NA 63 work as well?

J.M.G.

I do think, that the mid-resonator does effect the sound a lot. Take a look at the new AMG GT or C63 S with bi-mode exhaust. They alter the noise by a small valve in the H-Pipe. So the big mid resonator of the 550 is a problem. Replacing it with two straight pipes should help a lot (as other setups like the SL 550 do not have such an resonator at all).

I bought a used E63 AMG exhaust, as they run ~500-700 USD, if you look out for a while over here. As I also do own an CLS 550 Shooting Brake, I was also looking for an CLS 550 exhaust. I really love the sound of the CLS 550. It is not as loud as the AMG-Exhaust at idle and low rpm / throttle position, bot I like the slightly higher exhaust note at mid RPM. However, I was not able to get my hands on a used system, but this would have been my favorite! It is not as loud -I know some CLS-guys complain about that- but it screems like a nascar at WOT. Another advantage: The CLS-exhaust should fit plug and play. The AMG-exhaust has to be modified (exhaust tips & forward piping to fit onto the downpipes).

jonUF02

I test drove the CLS550 just after the E550, and I thought: Yes, this is how it should sound. It has just enough tone so you know there is a V8 under the hood, but not enough to be annoying at any speed. I'll have to look at the differences between the two cars exhaust.

rediesel

Honestly, just stright pipe it. If it's too loud (it won't) add an H connector.

IMO as a rule of thumb you should straight pipe a turbo engine, and X (or H) a Naturally aspirated one.

jonUF02

I think the sound you are looking for is a bit different from what I'm looking for. I see plenty of videos of "striaght pipe" 550 TT cars, and it's way too loud and raspy. I just want a mellow tone rather than complete silence.

jonUF02

I just looked at some part numbers, and the only difference between 2012 E550 4matic and the 2012 CLS550 4matic is the end mufflers. The forward sections where the secondary cats are, and the center resonator are the same part numbers.

It's possible that the used CLS550 I drove already had modifications, I didn't look under the car, or it's all in the mufflers.

J.M.G.

You are right. The E550 Facelift (2014+) uses the CLS 550 exhaust:
http://mercedes-benz-teile.info/view...=49&subgrp=212

The differences are in the downpipes and the rear resonators. The mid resonator is the same.

rediesel

^^^Yes, the rear mufflers have a lot to do with the sound/volume. AMG have very aggressive rear mufflers (they have been called megaphones by some). Non-AMG mufflers are much quieter.

I'm not looking to do anything to mine ATM.

The ones that are loud are when they de-cat the car and/or remove the rear mufflers completely or put AMG rear mufflers on there.

Resonator delete via straight pipe and keep the stock rear mufflers is a very mild modification, and won't be as loud/raspy as an AMG.

Here is what another experienced.

https://mbworld.org/forums/e-class-w...ggestions.html

jonUF02

When people say "I have straight pipes" I hear it as the entire exhaust, no muffler at all, like a drag car or something. I guess the straight pipes mentioned here are just to remove the center resonator.

jonUF02

The fluttering exhaust sound mentioned in that thread is what I want to avoid with the H pipe.

I've listened to clips of some different kinds if cars with H pipe vs. X pipe, and I think I'll prefer the sound of H. Also the comments say X is still pretty quiet, and it costs more than just having the shop weld in the H cross section. I'm going to talk to a shop about it tomorrow.

rediesel

^^ The guy with the fluttering effect had a NA v6 not the ttv8. (My premise has always been that you X a NA engine straight a turbo one.)

Juice1979

You will get the "fluttering" with straight pipes. But i dont think its sounds bad at all. You only hear it at idle when standing behind the car. If you put an xpipe on you will be wasting your time and money. The car will sound exactly the same as stock. I literally just went thru this last month

mrmotoguzzi00

assuming my 2016 E550 Cab has the muffler of the cls550 ? It's fairly quiet from inside, although idling in the driveway and when my wife takes off there is no doubt it's a V8...

quiet rumble... it's got a nice thump at 1/3 throttle... 3k shifts...

it's only got 400 or so miles so far so I haven't hit it too hard

Mike

J.M.G.

The fluttering is also a point with the stock E63 exhaust, especially when the car is cold.

Tonight (over here it is nearly midnight) we took my 550 into an underground parking lot and enjoyed the sound of the 63 exhaust...:

rediesel

Johannes,
What all exhaust mods have you done to that car?

J.M.G.

Thank you for your question. I simply pulled the rear exhaust -consisting of mid resonator, piping and both rear resonators- and replaced it with the rear exhaust of an E63 Facelift. To make it fit, minor modifications were necessary:

1. Piping into the mid resonator had to be modified due to different pipe diameter of the 63 and slightly different pipe length.
2. Rear exhaust tips of the 550 had to be modified to give enough room for 2 tail pipes per rear muffler.