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      12-14-2019, 03:38 AM   #13
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 akkando View Post
Quote:
Originally Posted by Bee Pee View Post
Hi flo Inlet pipe is worthwhile on stock turbo running a tune, as it offsets any loss in throttle response if running a larger/upgraded i/cooler.

On std tune, better flow @ WOT helps m2 n55 hold more boost for longer in the upper rev range and demands on the turbo is less (lower WGDC to achieve same boost target) which helps longevity/reliability.
What's the downside? Why doesn't it come that way stock?
Built to a budget - stock inlet is same part no as early f series n55 PWG car with smaller turbo
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Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten:

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