I found some decent information on the difference of the N26 compared to the N20 engine, being that more and more engines are now going the the N26 setup for emissions.
I know there is a lot of talk about the N26 HC air filter, and catalytic convertors.
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2013 F30 335i w/ Xdrive M-SPORT
MHD Tune, M Performance stainless pedals, M Performance trunk spoiler.
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