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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning M235i Stock Exhaust Pipe Diameter?

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      01-25-2016, 11:08 PM   #1
boba8523
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M235i Stock Exhaust Pipe Diameter?

Hi Everyone,

I'm thinking about doing muffler delete on my M235i and would like to know what the inlet exhaust pipe going to the stock muffler is.

Thanks!
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      01-25-2016, 11:49 PM   #2
Bee Pee
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80mm
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      01-26-2016, 09:28 AM   #3
boba8523
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Quote:
Originally Posted by Bee Pee View Post
80mm
That's the exhaust tips right?

I"m referring to the pipe diameter going into the stock M235i muffler.
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      01-26-2016, 02:14 PM   #4
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Correct pipe going into the muffler - tailpipe dia without trims is only 60mm
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      01-26-2016, 02:31 PM   #5
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Quote:
Originally Posted by boba8523
Hi Everyone,

I'm thinking about doing muffler delete on my M235i and would like to know what the inlet exhaust pipe going to the stock muffler is.

Thanks!
Very good choice. I have my muffler deleted and it sounds unreal!
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      01-26-2016, 11:00 PM   #6
boba8523
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Quote:
Originally Posted by Bee Pee View Post
Correct pipe going into the muffler - tailpipe dia without trims is only 60mm
Wow that is small!

60mm = 2.3622 inches..... For custom exhaust piping, i think they only go by 2.25" or 2.5" ... 2.36" is in the middle...?
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      01-27-2016, 04:58 AM   #7
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Quote:
Originally Posted by boba8523 View Post
Wow that is small!

60mm = 2.3622 inches..... For custom exhaust piping, i think they only go by 2.25" or 2.5" ... 2.36" is in the middle...?
Yep - that's maybe why MPE tailpipes are 67mm !!
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      05-16-2016, 07:06 AM   #8
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Just to Note: MPE exhaust tailpipes are exact same diameter externally as the standard black tips...the pipe itself is wider on MPE i realise...
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