hi,

my turbo seems to have a flutter sound to it for some reason when easing of the gas slowly, but it still pulls ok apart from when i floor it i get like a realy loud whistle more so than i used to get, and a sort of like crackle kind of sound?

any ideas???????????

thanks
leon

 

Sounds like the dump valve - if the whistling sound is like blowing air over a bottle-top, it's leaking under boost. The fluttering sound is quite possibly it not releasing pressure at low boost (you then get air bouncing up & down from somewhere).

I'd check hosing; if that's ok, give the BOV a bit of a once-over (check it's clean/nothing bunging it up), or just replace the thing depensing on how old it is.

Might be completely wrong here, but that would be my guess

 

ok mate thanks for the reply,
ill give it a whirl

 

may be wrong by i have a fluttering noise on spool up which is the compressor cutting air, only noticed this noise when the de-cat down pipe was fitted.

 

Pat i have the same noise when i fitted a magnex downpipe, could never work out what the noise was,nice to see some one els has it to is your down pipe a twin dump. has ony one else had this noise after fitting a d/p.