Right i know this has been covered before,but just to clarify i fitted an induction kit to my s3 on wed,the car seems ok at low revs but when i boot it the revs rise and the speed stays the same-ish.is this definately the maf,and if it is when i fit a new one will i have to fit my old air filter.and would you say it is ok to drive the car for now,ive got to drive to portsmouth and back tommorow and odnt fancy breaking down.