Turbo Flutter and Blow Off Valves

[RAP1D]

Yeah basically, remove the bov and you'll get some flutter but wont be much on stock psi... if you want some extra spool noise get on of these

Intake pipe

[FOONIN]

Anybody know what the rapid system guys are using on this car? Its probably an easy answer for someone who knows. Cheers.

[freeze_dk]

if you want a loud as *beep* spool and flutter then do this

[FOONIN]

what sort of BOV produces the flutter as heard in the video before?

[FOONIN]

sequential? or blocked BOV?

[Dillz]

I'd say Blocked.

Someone might know this, is the main purpose of the cone on FG's to reduce flutter? Or does it have another purpose?

[j.d]

yeh, pretty sure it just acts as a silencer. could be wrong though.?

[Rudiger]

if you want a loud as *beep* spool and flutter then do this

What did THAT sound like??? I am guess ing that was an experiment? Surely you didnd't have it like that for a long period of time??

[freeze_dk]

really loud,, spool sounds like a jet and flutter is loud also,, apart from that the car is standard.. surprised how loud it is.. heres a crap quality vid,, louder then this..

[ColinFGXR6T]

The flutter is from a non working BOV. The flutter noise comes from the turbo through the airfilter. If you have a aftermarket BOV from the standard Bosch ones and it still makes the flutter noise, it can mean the spring is set to hard or the BOV is to small for the boost the car is making.

I removed the cone on my FG and it made the spool noise in the turbo sound alot louder. So it must silence the spool induction noises alot.