Did you use any race gas or octane boosters?
Could the tune be off and running lean?
Cats breaking down and throwing crap?
head gasket slightly blown?
Maybe your car is up all night doing cocain?
Well I'm out of guesses, the peanut gallery will now shut up
no octane booster, i did not do any aftermarket tunes, i did have a piece of the honeycomb of the cat that threw up out the exhaust tailpipe recently. coolant does not get low and is not milky etc.