R56 Dump Valve Sound/

[hammo18]

My Cooper S Seems to be giving a whistling noise when you give it the beans which I guess is the turbo, but then when changing gear a swish can be heard, which sounds exaclty like a quiet dump valve..any ideas why?

2007 S if that helps

Cheers
Mark

[BlueBeastie]

Mine does the same. It's the blow off valve which I'm assuming is the same a dump valve.

[hammo18]

mine ended up being the turbo inlet pipe which was on loosely! Miss the woosh sound now

[Nick007]

MCS (or most of normal turbo cars) don't have blow-off valve, but rather bypass adapter, so the air isn't blown into atmosphere but to turbo's cold air intake.

@hammo
If you want to hear the whoosh, just get CAI, for example from Alta.

[Tabintab]

This is probably a bit late, but what you have on the Cooper S is a ******** noise generator that attaches to the bulkhead. Thats what you can hear.


Tab

Quote: Originally Posted by Nick007 (original)

MSC (or most of normal turbo cars) don't have blow-off valve, but rather bypass adapter, so the air isn't blown into atmosphere but to turbo's cold air intake.

@hammo
If you want to hear the whoosh, just get CAI, for example from Alta.