Hi, no, no smoke it doesn't miss or anything! all it does is it feels like your putting your foot half way down then off again, then half way down then off again as the revs are picking up, i was thinking could it be MAFF? i have a spare one albeit its off a 1.9 115 engine, anyone know if they are the same sensor the body is a different size but the actual sensor unscrews. (it does seem to lack a bit off power on initial pull off compared to the old 115)!!!!!????? cheers matt