smoking issue cover up?
im fbo and sec cat delete and my car smokes alot to a point where i cant take it anymore.
would secondary cats cover up the smoke at all?
2007/1 e90 335i jet black
jb4 g5 iso/bb flash--afe s2 sealed/scoops--cpe dp's sec cat delete dimisa 4"--cpe ic--aa cp/bov--ww meth--fsb-koni yellow h&r sport/lightweight wheels