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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > f30 3.5in single downpipe on 2011 e90 n55?



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      01-20-2020, 03:54 PM   #1
tom_lom
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f30 3.5in single downpipe on 2011 e90 n55?

As the title states, I am trying to make a single exit downpipe and mid-pipe for my 2011 e90 with the n55 motor. A few posts mention to just modify the catless downpipe by cutting off the split flange and making it single. My plan after the dp is to make a custom 3.5 inch mid-pipe with a 3.5inch vibrant resonator. Put a Y-pipe at the rear axel to split into the factory mufflers.

MY Question is... will a 3.5 inch catless downpipe from a 2012-13 f30 PWG fit in my 2011 e90? I can't find any info on this topic. I believe it would probably fit, as the engine is exactly the same. In theory it should bolt up to the turbo, only the mounting brackets I would have to worry about possibly?

This would make it cheaper/easier than cutting up an aftermarket e90 dp and making it a single exit if I can just bolt in a f30 dp and fab up the exhaust to fit the pipe.

No one has really done this that I can find other than this but its paired with a Black Market Racing 3.5 inch Track exhaust (extremely loud) but good sounding.
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