last year i installed a stage 3 monster on my 06. so one day i was taking it to get fuel and when i went to stop and pull in this horrible sound came from the car. It sounds like there are a bunch of empty beer cans stuck under the car and are scrapping. the car now makes this sound every once in a while and it only does it when i stop i checked my breaks and under body nothing seems to be touching. so all i can pin it to is either the clutch or maybe something with the motor i have an ms4 cam. Anyone have an idea what it could be???