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      10-08-2018, 09:27 AM   #3
Bee Pee
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Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

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Quote:
Originally Posted by nonarcs View Post
Ok so I've a jb4 on my car and am currently running map 1, what I know is that with a more free flowing mid pipe I will be able to run map 2,
No - midpipe is less of an issue for moving from map 1 to map 2 - you need to upgrade stock DP 1st. Plenty of folk running high boost tunes with standard exhaust intact but with DP upgraded.
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Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten:

Current '22 X3M LCI..
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