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2Addicts | BMW 2-Series forum Technical Topics N20 (228i) / B46 (230i) Engine, Transmission, Exhaust, Tuning 230i Dual Exhaust Conversion

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      05-16-2023, 12:12 AM   #1
Kirby145
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230i Dual Exhaust Conversion

Hey all,

I recently purchased a 2017 230i with the M-Sport Package along with an M235i/M240i rear diffuser to carry out the conversion.

I purchased a Dinan M235i Free Flow Exhaust which has a 75mm diameter.
The 230i has a 80mm diameter and so for the fitment to work, I believe a reducer/adapter piece would be needed.
I would've preferred to get the M240i exhaust but the M235i's was 50% off on Dinan's Website.

My concerns are as follows:
1. Are there any drawbacks to welding since an adapter will be needed for the fitment?

2. Will the weld/adapter mess up the exhaust fitment?
- Would they extend the exhaust tips further beyond the diffuser?
- Would they cause the exhaust to hang lower below the diffuser?

Thank you all in advance for the help. Your advice is greatly appreciated.
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      07-24-2023, 08:32 PM   #2
thielepr
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Not a good idea. I would get the M240 muffler either the stock or the M performance, I got the second one and I love it
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      10-17-2023, 09:35 AM   #3
espione
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Quote:
Originally Posted by thielepr View Post
Not a good idea. I would get the M240 muffler either the stock or the M performance, I got the second one and I love it
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