2.5" Xpipe instead of 2.25". A problem?
Thread Starter
Senior Member
Joined: Feb 2014
Posts: 350
Likes: 22
From: Edmonton
14' E63S
2.5" Xpipe instead of 2.25". A problem?
So my buddy had a Magnaflow 2.5" Xpipe and I grabbed it for dirt cheap and didn't realize the difference.
Now the w204 c300 if I am right is 2.25"?
Would there be a problem or anything bad if I get the guys to instal the 2.5" on a 2.25" pipe? Ofcourse they will do all of the necessary modification.
What do you guys think?
Now the w204 c300 if I am right is 2.25"?
Would there be a problem or anything bad if I get the guys to instal the 2.5" on a 2.25" pipe? Ofcourse they will do all of the necessary modification.
What do you guys think?
Member
Joined: Aug 2015
Posts: 100
Likes: 7
From: Santa Rosa, CA
2012 Mercedes C250
With the larger pipe diameter you will lose a small amount of torque as compared to the correctly-sized pipe, but otherwise it'll just cost a bit more to install, as the shop will need to adapt it. It certainly shouldn't cause any 'problems'.
Super Member
Joined: Sep 2013
Posts: 532
Likes: 5
R8, C63, C300
You're not going to lose any torque on a small piece like an X-pipe. You'll be fine and it will fit. Any exhaust shop will make it fit.
Thread Starter
Senior Member
Joined: Feb 2014
Posts: 350
Likes: 22
From: Edmonton
14' E63S
I heard it sounds great, but last thing I want is to loose low end torque if I remove those as well.
Member
Joined: Aug 2015
Posts: 100
Likes: 7
From: Santa Rosa, CA
2012 Mercedes C250
After spending most of the last 15 years in the performance exhaust industry, I can assure you that there will be a slight torque loss when using oversized piping in an otherwise stock car's exhaust. Will it kill the car? Heck, no, but it will be there. The bigger the pipe, the worse the issue. Same with removing cats and mufflers entirely. Too free-flowing of an exhaust does you no good anywhere but a drag strip- and there, only if the car/computer is tuned for it.
On the opposite side, a restricted exhaust will reduce top-end power by not allowing the exhaust to flow efficiently at higher RPM. It's simple physics.
On the opposite side, a restricted exhaust will reduce top-end power by not allowing the exhaust to flow efficiently at higher RPM. It's simple physics.
Senior Member
Joined: Feb 2010
Posts: 473
Likes: 15
From: SF bay area
C300 sport
Even though I wanted 2.25, my muffler guy insisted on 2.5 because he would be able to slide it over very snug and weld it onto the stock 2.25 pipes. I honestly wanted the 2.25 so it would stay uniform, but he assured me that it made no difference if it was .25 inches bigger. I didn't want to argue with a professional when I myself had very little knowledge in the subject. It sounds great and I'm not really sure of any torque loss.
Here is a sound clip of my xpipe:
Here is a sound clip of my xpipe:
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Joined: Oct 2008
Posts: 2,601
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From: Atlanta, GA
2008 C300 Sport 6 Speed Manual, 1953 Chevy Bel-Air, 2015 Audi allroad, 1963 Chevy Apache
After spending most of the last 15 years in the performance exhaust industry, I can assure you that there will be a slight torque loss when using oversized piping in an otherwise stock car's exhaust. Will it kill the car? Heck, no, but it will be there. The bigger the pipe, the worse the issue. Same with removing cats and mufflers entirely. Too free-flowing of an exhaust does you no good anywhere but a drag strip- and there, only if the car/computer is tuned for it.
On the opposite side, a restricted exhaust will reduce top-end power by not allowing the exhaust to flow efficiently at higher RPM. It's simple physics.
On the opposite side, a restricted exhaust will reduce top-end power by not allowing the exhaust to flow efficiently at higher RPM. It's simple physics.
Doubt anyone could say for sure unless you tested the flow over the full RPM range. Either way, the effect would be nominal.
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