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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Remove X-pipe or Mufflers??



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      09-01-2009, 10:16 PM   #1
lamia2super
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Remove X-pipe or Mufflers??

I have a custom exhaust that was made for me with mandrel bend, xpipe, and magnaflows mufflers and I was wondering if I remove the xpipe or the mufflers would the car be faster? I'm thinking that keeping both the xpipe and mufflers is to much back pressure and slowing me down. What do you guys think? maybe removing the mufflers and keeping the xpipe would make the car faster(also lighter) because the xpipe will make some back pressure in the middle of the car and from their it leaves quick.

is that a good idea? or just removing the xpipe is better? is it even worth it?

any advice would be helpful

PS: I have catless downpipes
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      09-01-2009, 10:23 PM   #2
s1cke92
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if you remove the xpipe let me get it! i need one. i traded exhaust and mine dint have it the dude remove it.
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      09-02-2009, 12:12 AM   #3
gt3fever
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i believe it wouldn't be much of difference if you remove both.


what mods do you have?
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      09-02-2009, 01:28 AM   #4
addicted2drums
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unless you want it louder, might as well keep 'em

depending on the Magnaflow mufflers you installed they should be straight thru, and baffled like the stock ones. so removing them or the x-pipe will make the car louder and i dont think you will release much back pressure build up.

here is a picture i found online of one similar to what i have installed. if you have the slimmer muffler that they specifically sell for this car it is the same just no curve.
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      09-02-2009, 06:18 PM   #5
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Quote:
Originally Posted by hipertech View Post
i believe it wouldn't be much of difference if you remove both.


what mods do you have?
I have all bolts on (dp, fmic, dci, AA processor that I'm selling because I bought a procede, clutch and flywheel)

Quote:
Originally Posted by addicted2drums View Post
depending on the Magnaflow mufflers you installed they should be straight thru, and baffled like the stock ones. so removing them or the x-pipe will make the car louder and i dont think you will release much back pressure build up.

here is a picture i found online of one similar to what i have installed. if you have the slimmer muffler that they specifically sell for this car it is the same just no curve.
mine look like the one in the picture
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