Kleemann Headers Question!
Thread Starter
Member
Joined: Sep 2018
Posts: 98
Likes: 3
2012 CLS63
Kleemann Headers Question!
Im looking at picking up a set of used kleemann headers for my e55 and they do not have the downpipe piece that connects to the stock exhaust. My question is will there be any performance loss if I have an exhaust shop bridge the headers to the stock exhaust with a piece of straight pipe? This will also eliminate the flange from the headers to the stock exhaust altogether. Any help would be greatly appreciated. THANKS!
Super Member
Joined: Jan 2017
Posts: 860
Likes: 80
From: Christchurch, New Zealand
CLS55
Shouldn't be a performance loss. Only consequence I could think of being possible would be extra stress on the welds from the motor torquing? I don't know if the flange allows some degree of flex, but I am doubtful. For example MBH long tubes weld straight onto the mid section so it must be fine!
Thread Starter
Member
Joined: Sep 2018
Posts: 98
Likes: 3
2012 CLS63
Shouldn't be a performance loss. Only consequence I could think of being possible would be extra stress on the welds from the motor torquing? I don't know if the flange allows some degree of flex, but I am doubtful. For example MBH long tubes weld straight onto the mid section so it must be fine!
Trending Topics
Thread Starter
Member
Joined: Sep 2018
Posts: 98
Likes: 3
2012 CLS63
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
Super Member
Joined: Aug 2018
Posts: 697
Likes: 172
From: Seattle, WA
2019 M5 Comp, 2005 Ariel Atom 2
I just did manifolds on my car, after having the secondary cats and resonator removed with an x pipe in place, and I can tell you that having a flange would have been really nice! It was comical to juggle a transmission jack in the center and tie down straps in the back to get the exhaust down one end at a time. My advice - have them put a flange in somewhere. If in the future you need flex disc work etc it will make life much easier, or less expensive if having a shop do work.
Member
Joined: Jun 2007
Posts: 209
Likes: 11
From: New Jersey
'04 E55 AMG
I just did manifolds on my car, after having the secondary cats and resonator removed with an x pipe in place, and I can tell you that having a flange would have been really nice! It was comical to juggle a transmission jack in the center and tie down straps in the back to get the exhaust down one end at a time. My advice - have them put a flange in somewhere. If in the future you need flex disc work etc it will make life much easier, or less expensive if having a shop do work.
Super Member
Joined: Aug 2018
Posts: 697
Likes: 172
From: Seattle, WA
2019 M5 Comp, 2005 Ariel Atom 2
It's too quiet! I thought I liked it until I realized a lot of the new sound was the crack that finally let go on one of the manifolds ha. It seems like it's 5-10% louder than stock. I've heard with the C63/E63 mufflers it sounds much better. Current debate is to do that, or wait until I can afford LT headers and leave the stock mufflers in because I think with headers all the way back to louder mufflers it would be too loud..
Thread Starter
Member
Joined: Sep 2018
Posts: 98
Likes: 3
2012 CLS63
I just did manifolds on my car, after having the secondary cats and resonator removed with an x pipe in place, and I can tell you that having a flange would have been really nice! It was comical to juggle a transmission jack in the center and tie down straps in the back to get the exhaust down one end at a time. My advice - have them put a flange in somewhere. If in the future you need flex disc work etc it will make life much easier, or less expensive if having a shop do work.
Thread Starter
Member
Joined: Sep 2018
Posts: 98
Likes: 3
2012 CLS63
I just did manifolds on my car, after having the secondary cats and resonator removed with an x pipe in place, and I can tell you that having a flange would have been really nice! It was comical to juggle a transmission jack in the center and tie down straps in the back to get the exhaust down one end at a time. My advice - have them put a flange in somewhere. If in the future you need flex disc work etc it will make life much easier, or less expensive if having a shop do work.
MBWorld Fanatic!
Joined: Oct 2004
Posts: 1,358
Likes: 297
From: South Florida
2010 E63 AMG, 2003 E500
I recently had Eurocharged mid-length headers installed on my 2003 E500 and am really happy with the results. Got them ceramic coated at a local shop before they were put in. Personally, I would be a little leery of buying used headers, especially if they don't come with downpipes. This is a project you only want to do once, and have done right so you don't encounter issues down the road. I called around numerous local European Indy mechanics before I found a guy that used to work for Renntech and had performed the installation many times before. Just my two cents.
Senior Member
Joined: Mar 2015
Posts: 386
Likes: 22
From: Tx
04 55
I recently had Eurocharged mid-length headers installed on my 2003 E500 and am really happy with the results. Got them ceramic coated at a local shop before they were put in. Personally, I would be a little leery of buying used headers, especially if they don't come with downpipes. This is a project you only want to do once, and have done right so you don't encounter issues down the road. I called around numerous local European Indy mechanics before I found a guy that used to work for Renntech and had performed the installation many times before. Just my two cents.
thanks
Thread Starter
Member
Joined: Sep 2018
Posts: 98
Likes: 3
2012 CLS63
I recently had Eurocharged mid-length headers installed on my 2003 E500 and am really happy with the results. Got them ceramic coated at a local shop before they were put in. Personally, I would be a little leery of buying used headers, especially if they don't come with downpipes. This is a project you only want to do once, and have done right so you don't encounter issues down the road. I called around numerous local European Indy mechanics before I found a guy that used to work for Renntech and had performed the installation many times before. Just my two cents.
MBWorld Fanatic!
Joined: Oct 2004
Posts: 1,358
Likes: 297
From: South Florida
2010 E63 AMG, 2003 E500
http://www.hotshotusa.net
Thread Starter
Member
Joined: Sep 2018
Posts: 98
Likes: 3
2012 CLS63
I installed the headers and was able to use a generic 3 bolt flange. The install was a huge PITA. Took me about 6 hours! I dont think someone could pay me to install headers on another E55 ha! End rant.
The local exhaust shop only could only do crush bent tubing but the butt dyno feels pretty good regardless. I'm just waiting on my RaceIQ tune from Tony to get rid of that pesky CEL and get the most out of the headers. I'm going to order a mandrel bend kit and have my exhaust fabbed up from the headers to the rear section of the exhaust.
Should I go 3" inch or 2.5"???
The local exhaust shop only could only do crush bent tubing but the butt dyno feels pretty good regardless. I'm just waiting on my RaceIQ tune from Tony to get rid of that pesky CEL and get the most out of the headers. I'm going to order a mandrel bend kit and have my exhaust fabbed up from the headers to the rear section of the exhaust.
Should I go 3" inch or 2.5"???
MBWorld Fanatic!
Joined: Aug 2011
Posts: 3,428
Likes: 288
From: New Zealand
Post a photo of the bend. Mandrel is much better but if it is working fine I wouldn't bother changing it. You dealt with the extremely restrictive bottleneck in the system already. The rest of the exhaust isn't bad. Unless you have a very high performance goal consider leaving it. Most people only play around with it for the sake of noise.
Thread Starter
Member
Joined: Sep 2018
Posts: 98
Likes: 3
2012 CLS63
Post a photo of the bend. Mandrel is much better but if it is working fine I wouldn't bother changing it. You dealt with the extremely restrictive bottleneck in the system already. The rest of the exhaust isn't bad. Unless you have a very high performance goal consider leaving it. Most people only play around with it for the sake of noise.
