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      09-13-2019, 12:30 AM   #1
That red N55 135i
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Drives: 2012 135i BMW
Join Date: Sep 2019
Location: AZ

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Help passing emissions with a catless N55

I just recently purchased an n55 135i that came with an AR Design catless downpipe. I've tried to see if there is a DP fix for this brand, but cannot find any information. Does anyone know of a possible DP Fix (like the VRSF) that might work on the AR one? If not does anyone else have an AR design catless downpipe and have to pass emissions? I also have a Jb4 tune on the car and it's been on map 0 and should be okay with some sort of DP Fix. Any advise is greatly appreciated. I'm in Arizona so to my knowledge I can pass emissions with 1 "not ready" on my emissions testing.
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      09-16-2019, 05:14 PM   #2
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Drives: 2011 135i, Space Grey
Join Date: Apr 2014
Location: Silicon Valley

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Do a google search for Area 74 N55 DP Fix.

Might also be easier to find someone else that would let you borrow their catted DP for a little while.

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