I just got my greddy evo exhaust put on today, it does mades really good sound, I like it alot, the one of problem is......when the VTEC hits, it blew hella blue smoked out from the exhaust, looks like the oil is burning or something? I remember before I had greddy evo I just got the stock pipe with a little muffler on it, when the VTEC hits, it just blew black smoked, coz it giving too much fuel.. I don't have catalytic converter just the test pipe, its normal or its big problem? if its big problem, what I should do with that?