my car blew hella whitish blue smoke when my vtec pops, and people said they can smelled clutch or oil burning when I juiced off, when I still have my old exhaust, ita a custom pipe with a N1 style muffler, but its just blew BLACK smoke, now I had 2.25-inch test pipe it blew WHITISH BLUE smoke, why? its maybe because I have no catalytic converter or the rings going bad?