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Having put a pipercross induction kit onto my 172 Cup i get nothing but grief on a morning, car chugs and is flat under acceleration until it has got warmed up. Some one suggested air/fuel mixture wrong. Am ready to put standard box back in unless some one has a better idea?
is it much worse than it was with the OE filter? this is what they do until the cold start fuelling has switched to normal running (shouldn't take long) but it seems to vary in severity between cars
hum sounds just like mine as it's an open one too, intresting to know if its all open filters and whether closed ones are ok, would like to hear peoples view. am having a diagnostic sensor but in the exhaust on Fri to c if mixture is ok