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      02-05-2018, 12:32 PM   #26
AMG KLR
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Drives: 2018 440i GC
Join Date: Nov 2013
Location: USA

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Quote:
Originally Posted by Zel335 View Post
It would melt your cat if you had it on stage 1, this is why you need a downpipe for it to work.
Huh. I guess BMW NA is pretty evil for enabling that same feature with the standard MPPK which retains stock downpipes
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