Quad exhaust.. ala 1M
So I know there are a couple of options to run a quad 'style' exhaust on the 135i.. and I know there are ways to allow a 1M style exhaust work on the 135i. (i.e.: change trunk floor, move evap canister etc) BUT Im a little lost with regards to diffusers. Can you run the 1M diffuser on a 135i? Is there a reasonably priced quad diffuser that ISNT carbon fiber? and DOESNT have those stupid fins (more stock looking) ? What is the best bet for that part of it?
Essentially I'd like to run the 1M style exhaust on my 135i. What ALL am I going to need to pick up to make this work?
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