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02-01-2023, 12:45 PM | #2 |
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You swapped an N54 into your 128i? I think there are some aftermarket rear bumper valence/underbody spoiler that accommodate a dual exhaust. But you do need a 135i rear bumper.
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02-01-2023, 02:24 PM | #4 |
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I should also add the battery box needs to be changed too, if you have dual mufflers rather than one with some extra pipes snaked around.
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02-02-2023, 01:15 AM | #5 |
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The stock e82 128i and 135i has a single exhaust.
You can use something like an aftermarket rear muffler with exhaust tips on both sides and a 1M diffuser. Or use 1M muffler and swap trunk floor and other parts. Last edited by MOD.Works; 02-02-2023 at 01:20 AM.. |
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02-02-2023, 09:30 AM | #6 |
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I like the single exit on the 1 - I would even do a JDM style angled exhaust.
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