clio sport 172
hey evry1 need a bit of advice, i started my car up this mornin and the revs went up to 2000rpm, and slowly kept goin up, so when i drove off the car was movin without be usin accelartor i was just usin the gears and the clutch and it was goin up to 40 mph, so turned round and parked it up again, went out to turn it on again revs did the exact same but this time it was back firein alot then the engine, induction kit and exaust strated to jump, anyone no wat this cud be???