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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 02-18-2011, 06:24 PM   #1
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Join Date: Jan 2011
Location: Howell
Posts: 34
My Ride: BMW 330xi
Question dual OEM exhaust on a single inlet muffler ?

Hi I have a 2002 e46 330xi. And i bought a new muffler what according to the internet page fits my BMW. The issue is that i have a dual exhaust on the car but only have a single inlet on the muffler. Does anyone has a tip on how to install that?

I thought to just put a Y connector in would that work? Also i noticed that in one of the OEM exhaust pipes is a flap? which is closed when you start the car and when the engine is war it opens. But the muffler i bought doesn't have that. will that be a issue?

I would appreciate any help.


Last edited by D-BMW330XI; 02-18-2011 at 06:30 PM.
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Old 02-18-2011, 07:37 PM   #2
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Join Date: Feb 2011
Location: U.S.A.
Posts: 1,190
My Ride: BMW
That flap is just for sound reduction at low RPMs, it will only make the car louder if you don't have it. You will have to install a Y-Pipe to fit the muffler, its no big deal.
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