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09-10-2014, 06:38 PM | #1 |
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Custom rear diffuser options?!?
I am about to undertake the 135i > 1M quad exhaust swap because I don't care for the selection of 135i quad exhaust muffler styles. Something about the half-assed tiny tube that connects the passenger side tips (I'm looking at you Remus and Eisenmann..)
I know that there's a Hartge diffuser which is supposed to have the same exhaust tip spacing as the 1M that fits the 135i M-sport bumper, but it's NLA. There's also a specific model Rieger diffuser which has the same 1M tip spacing, and fits the 135i M-Sport bumper, but it's approximately $1,800US. I know I can swap my M-Sport bumper out for a 1M style aftermarket rear bumper, but looking to keep the OEM M-Sport if I can. Has anyone done the 1M exhaust swap used their M-sport rear bumper? If so, what method did you use to create a diffuser that fits? 1M stock exhaust outlet: 135i stock exhaust outlet (spacing is different on the left side exhaust outlets): Last edited by highbrowed; 03-24-2016 at 12:26 PM.. |
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