chattering

[webby888]

iv had a air intake fitted to my car for around 6 months now and i only ever used to get a chattering noise only every now n again when letting off the throttle, however now it is every time i take my foot off the pedal.

is this somethin to be concerned about?

[Gazza747]

I had chattering noise when lifting off throttle and when letting the engine slow the car, most noticeable going downhill with the windows down. Am now getting a new turbo fitted as it was the wastegate chattering. I would expect it could be many things, this being just one of them.