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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 > thoughts on my custom exhaust plan?



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      02-26-2015, 07:02 AM   #1
einbruch10
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thoughts on my custom exhaust plan?

So I'm ordering 2 vibrant 1792's to replace my secondary cats. Now I'm trying to decide if I should do an x pipe or a dual 2.5 to single 3 outlet? My plan was to run a single to a full boar muffler with dual 2.5 outlets to route the exhaust to the oem cut outs with some fancy tips.

Actual questions:

Will my dual single dual setup sound good?
Which option will flow better? (i kind of already know the answer looking for confirmation from a forum rocket scientist)
If I stay the traditional route should I keep my stock mufflers or get something like magnaflow sports?

Any help would be appreciated guys!
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      02-26-2015, 07:05 AM   #2
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X-Pipe will promote more flow than the Y-Pipe.... I'd suggest X-Pipe, only downside is it may cause some droning on the highway, that will all depend on what resonator and/or muffler you have.
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      02-26-2015, 07:09 AM   #3
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ive already ordered 2 vibrant 1792's which seems to be the favorite in this community. what should i do for muffler(s)? i would like to do a single if i can keep it from sounding stupid, but will 2 straight through mufflers sound raspy and drone like a siv on the highway?
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      02-26-2015, 08:45 AM   #4
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Dual 2.5" to single 3" or 3.5" would be best, better weight savings.
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      02-26-2015, 11:37 AM   #5
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Quote:
Originally Posted by happytaco View Post
Dual 2.5" to single 3" or 3.5" would be best, better weight savings.
if i end up going this route id make a full custom set up im wondering if its worth it. if i do an xpipe ill probably keep a majority of my stock exhaust.
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