Hi i own a 54, 1.6 active sport stilo. Its great but i have a small problem. When im driving and i take my foot off the accelerator there is a strange flapping/rumbling noise coming from the car. It seems to be coming from the rear of the car i think :S so i assumed it was something to do with the exhaust?? Was wondering if anyone could help or if anyone has had the same problem?? Thanks