i own a f32 435i 2015 .
it has a akrapovic exghaust system 8-),, and soon the jb4 will be installed and some bms spacers.:D
i was wondering which would be better to install , a high flow catted downpipe or a catless one ?:unsure:
it has a akrapovic exghaust system 8-),, and soon the jb4 will be installed and some bms spacers.:D
i was wondering which would be better to install , a high flow catted downpipe or a catless one ?:unsure:
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