Im just looking for some advice as the turbo on my 2007 S3 has started fluttering when i let off the accelerator or change gear. Up until today it used to have a hiss like a small dump valve when letting off or changing gear. Ive removed the valve at the front of the engine bay to check the diaphram isnt ripped and thats absoluterly fine. Ive not long had the car so it still has warranty on it but that means taking the car 68miles back to where i bought it from. Any advice would be great!! thanks!