it smokes very slightly@ idle. but if i get on it there is a small cloud behind my car till i shift (seems to be in high rpms). it's grayish smoke, very little blue. i cleaned the plugs and thats how i found the big problem... when i looked into the motor throught the holes for the plugs, i could see a layer of nasty, black oil sludge coating the top of each piston. i'm afraid it'll juss be easier and cheaper to buy like a d16 which'll bolt right up, and throw a turbo on it with my current mods.