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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > N20 Dual Exit Exhaust
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      12-22-2018, 07:34 PM   #1
Nd0udoinwork
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N20 Dual Exit Exhaust

Want to do a muffler delete to dual tips (335i style) and i was wondering what the pipe diameter should be where the muffler was. Also i'm only finding exhaust tips with a 2.5in inlet and people are saying 3inch piping for the exhaust, is there any way the 2.5 inlet tips would fit?
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      12-23-2018, 08:54 AM   #2
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The muffler shop has connectors and will make it fit just find one with solid reviews. I just had a 3 inch muffler installed on my f30 N20
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      12-23-2018, 10:01 AM   #3
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A muffler shop can fabricate pipes to fit pretty much any size. The guy that I use let me watch and help out when I put a 435 muffler on my 428
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      12-23-2018, 11:51 PM   #4
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Super easy. Did mine a while ago. So much better. Used the rear diffuser and muffler from a 335. Clips right in and bolts right on. Finished it off with tips from BMS.
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      12-25-2018, 08:27 PM   #5
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Quote:
Originally Posted by N26Ghost View Post
Super easy. Did mine a while ago. So much better. Used the rear diffuser and muffler from a 335. Clips right in and bolts right on. Finished it off with tips from BMS.
Looks good ghost. How much louder is it than stock? Do you have a DP? Did you keep your resonator?
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      12-27-2018, 11:07 AM   #6
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Quote:
Originally Posted by Fronttwelv View Post
Looks good ghost. How much louder is it than stock? Do you have a DP? Did you keep your resonator?
Here is a before/after.

At low revs, it is easily twice as loud with a much better/deeper tone.

In the higher revs, it is not much louder, just sounds better.

https://youtu.be/KijBgX-7y6w
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