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      08-08-2021, 08:02 AM   #12
n55david
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Drives: 2017 m240i, 2015 X3 x35i
Join Date: Aug 2018
Location: Michigan USA

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2017 m240i xDrive  [0.00]
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2015 335i xdrive  [0.00]
Quote:
Originally Posted by fortythirtyfive View Post
https://streamable.com/4z6r0f

MPE with resonator delete, the a few seconds later the aftermarket valve opens which bypasses the MPE backbox. This used to be my favourite overall tone, it was loud deep and not overly raspy.


I needed performance gains though so went catless. I then had the MPE modified so that I could the aftermarket valve behind the resonator and a second pipe straight into the tailpipes, that way I can have MPE + catless downpipes as a quite mode, then when I open the aftermarket valve it goes full hell turbo back straight pipe.

https://streamable.com/idb1rb




The full straight pipe version (current setup) reminds me a lot of an equal lengths F80/F82 sound.
from a physics standpoint that exhaust setup is disruptive and terrible.

interesting though.
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2017 m240i xDrive 10.99@122.86mph bootmod3 stage 2+ ots
2015 335i xDrive 10.95@124.99mph w/bm3 - SOLD
2015 X3 x35i pwg 12.96 catless w/bm3 stage 2 93 ots
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