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340i/440i mppk owners and additional mods
Does anyone have an aftermarket intake and/or catless downpipe with this setup? If so how is the compatibility and drivability? Want to do the BMS intake but worried about messing with the smoothness of this flash from the power kit. Also interested in ER Downpipe perhaps down the road. Thoughts?
Last edited by soultraveler00; 09-20-2016 at 11:36 PM..
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