





W203/CL203 Aftermarket Exhaust Thread - All you want to know

Since obviously you don't want to spend any money on the setup, the easiest way for a shop to do a custom quad setup is do the piping EXACTLY like ROLLINN did. Only difference would be that you'd have to get an aftermarket muffler with dual exits. All the shop needs to do is weld piping for 1 exit, then for the other exit, they run the piping from that all the way to the other end where they'd weld dual exits on the other side (JUST LIKE THE WELTMEISTER DESIGN).
Again, you're making it WAY too complicated.
they're cheaper than when I got'em now from performanceproducts.




It is #4 on this diagram.
Or is anyone selling this section.
If I did my research right this should only be a straight pipe for these 2 years.
The Best of Mercedes & AMG
It is #4 on this diagram.
Or is anyone selling this section.
If I did my research right this should only be a straight pipe for these 2 years.
My entire exhaust consisted of 3 parts. Headers + primary cat, piping w/ resonator, and piping attached to muffler.
It is #4 on this diagram.
Or is anyone selling this section.
If I did my research right this should only be a straight pipe for these 2 years.
My entire exhaust consisted of 3 parts. Headers + primary cat, piping w/ resonator, and piping attached to muffler.
So you are saying your car does not have the secondary cat like mine as per the diagram #4? That is what I though. I was at the dealer and the vin# for an 04 I gave them showed the same part as my 05? Is there a way you can see if you can get me a part # for that part from your car. Maybe you can call your dealer and give them your vin and tell them you think you need to replace that section of exhaust? I know yours is a 2004.5 so maybe this is why it is different. Either way if this is the case i really could use that straigh pipe on my car.
Do you have pics of your exhaust from that section?
Also you say you have piping with a resonator and then piping attached to the muffler. Where is the resonator installed. I though it was on the muffler section? See attached pics
Last edited by pugguy2001; Aug 23, 2008 at 02:52 PM.
So you are saying your car does not have the secondary cat like mine as per the diagram #4? That is what I though. I was at the dealer and the vin# for an 04 I gave them showed the same part as my 05? Is there a way you can see if you can get me a part # for that part from your car. Maybe you can call your dealer and give them your vin and tell them you think you need to replace that section of exhaust? I know yours is a 2004.5 so maybe this is why it is different. Either way if this is the case i really could use that straigh pipe on my car.
Do you have pics of your exhaust from that section?
Also you say you have piping with a resonator and then piping attached to the muffler. Where is the resonator installed. I though it was on the muffler section? See attached pics
Basically, if I hadn't have done the resonator delete, it wouldn't be just piping from the primary cat back.
Let me repeat this 1 more time.
3 sections
- headers and primary cat
- mid pipe with resonator
- piping attached to muffler/exit
The part was replaced was the mid pipie w/ resonator. Now, it's just a straight pipe going to the muffler/exit.
Basically, if I hadn't have done the resonator delete, it wouldn't be just piping from the primary cat back.
Let me repeat this 1 more time.
3 sections
- headers and primary cat
- mid pipe with resonator
- piping attached to muffler/exit
The part was replaced was the mid pipie w/ resonator. Now, it's just a straight pipe going to the muffler/exit.
The mid section you are talking about connects with the flange at the primary cat and then bends around to the drive side and then connect with another flange towards the middle of the car, right? If this is correct I can really use that part number for that section since a resonator should be cheaper than a cat.
The mid section you are talking about connects with the flange at the primary cat and then bends around to the drive side and then connect with another flange towards the middle of the car, right? If this is correct I can really use that part number for that section since a resonator should be cheaper than a cat.
Try 203 409 0101. That's the number on the bottom or the resonator.
Here is the stock flange I was talking about. Odd 2 bolt flange.
I have a custom cat-back dual exit Kleemann. Piping is only 2.5-2.75 from the cat-back.
It all depends on the muffler you go with, diameter of the piping, etc... There are some setups that end up sounding more tinny and/or "ricey."
Just gotta choose wisely and you'll end up with a nice sounding exhaust.
Only thing it is "pointless" for is if you expect to gain any significant power. At most, I'd say someone can gain 1-2 hp (AT MOST) if at all.
I have a custom cat-back dual exit Kleemann. Piping is only 2.5-2.75 from the cat-back.
It all depends on the muffler you go with, diameter of the piping, etc... There are some setups that end up sounding more tinny and/or "ricey."
Just gotta choose wisely and you'll end up with a nice sounding exhaust.
Only thing it is "pointless" for is if you expect to gain any significant power. At most, I'd say someone can gain 1-2 hp (AT MOST) if at all.
What was your setup, specifically? And do you mind sharing how much installation and labor cost?
oh and btw what suspension parts did you install, cuz it seems like your ride is "balanced" and not like a tractor.
Last edited by rocafel1a; Aug 28, 2008 at 06:48 PM.
Yes, I mind sharing the cost on installation and labor...LOL...Only because My car is all over the w203 forum, if you just search. I'm party of the $15K club when it comes to mods (I'm sure you'll understand, the more you read through the forums).
Um, check the AFTERMARKET / D.I.Y MODS STICKY. That has a tremendous amount of links that you can read through, and bump if necessary, to ask your questions. There is a thread in particular that is called SUSPENSION THREAD that you can bump and ask.
Thanks in anticipation!!!
BTW..My engine is stock. I would just like a little more flow and just a bit of sound out the exhaust...not loud!




that looks great. now just paint or vinyl the diffuser part