Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Mercedes-Benz Performance Paddock

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-04-2008, 02:36 PM
Holson Adi's Avatar
Registered User
 
Join Date: Jul 2001
Location: Boston, MA
Posts: 2,561
190E 2.6L exhaust modifications (m103)

OK my 190E's exhaust is droning at highway speeds and at low rpms it's got an annoying rumble (not the nice kind from a V8 - just droning sound). It's just an awful sound.

My guess is there's a hole in the exhaust system somewhere. The valve seals were also replaced recently since oil had been going into the combustion chamber at a rate of 1 qt / 300 miles. My guess is the cat(s) arent in the best of shape anymore.

As such I would like to just upgrade it with newer stuff

can anyone shed some light as to what the stock 2.6 exhaust is like?

It looks like it's the following (in order from engine to exhaust tips)

6 to 3 to 1 manifold
a small cat conv. (pre-cat?)
a bigger cat conv.
a resonator
the rear silencer

I wanna start at the front. I don't think there exists a header for the 2.6, so I'll just start with the cats.

Does anyone know which high flow cats can be used with this model? Ive been looking at the magnaflow ones but not sure which ones will fit.

I'm guessing the exhaust shop would have to cut a hole into the universal high flow cats to put in the O2 sensors right? (which Im sure I want to replace while they are out)

thanks in advance!
__________________
2008 BMW 335i Coupe
Reply With Quote
  #2  
Old 12-04-2008, 07:30 PM
Registered User
 
Join Date: Oct 2004
Posts: 3,261
If I were going to do a complete exhaust on that car, I'd delete the center resonator and use a single "quiet" performance muffler. I've also wondered if installing an "h" pipe somewhere before the cats would help power.
__________________
90 300TE 4-M

Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197 intake cam w/20 advancer
4 ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff
Reply With Quote
  #3  
Old 12-07-2008, 03:08 AM
hey_allen's Avatar
greasy fingered tinkerer
 
Join Date: May 2006
Location: Tacoma, WA
Posts: 728
Isn't the 190e an inline engine, with a single exhaust pipe? I'm just curious how an H pipe would work out.

If it's a split between 3 cylinders and the other 3, it might make a difference though...


I replaced the rusted out and scuffed euro dual exhaust on my SEC with straing pipe and what was supposed to be a relatively quiet muffler on in the rear.
Apparently I overdid the system size in trying to reduce back pressure while I was at it, as even with an H pipe in the system, ahead of the transmission, it definitely has a grumble at idle, roars when accelerating, and drones at highway speeds.
(Of course going from dual ~1 3/4" pipes to dual 2 1/2" pipes might have had something to do with it, not to mention the elimination of a set of resonators...)

A few of the sites that sell Magnaflow cats, as well as others have them rated by the displacement of engine that they are supposed to be rated for. Jeg's and Summit Racing come to mind right off the top of my head.

If you want to keep it free flowing as well as reasonably quiet, a fleet mechanic I know has recently started praising the Aero Turbine mufflers here that he's tried on their fleet to replace the stock ones when damaged.
From what he was telling me, and then from what I heard in person, they do grumble a bit, but they have a reasonable tone. (and they'd likely be a 'bit' quieter if it weren't a 4" system, which was the one I heard, on a Suburban!)

Best of luck, whichever way you decide to go!
__________________
-Josh
Testing the cheap Mercedes axiom, one bolt at a time...
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 05:30 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page