Greddy Plenum High Boost Howl..

[skeg_man]

Hi all,

Recently did the greddy front plenum change on a R33 gtst and I seem to have come across a problem. When the car gets up to around 7-8 psi of boost (upgraded turbo) there is a loud howl from the intake plenum...

Ive done a vacuum leak test with a compressor and cant seem to fund any leaks???

Is this sound caused from a higher rate of air flow due to being a front facing plenum or something more to it?

The car doesnt idle funny or anything. Seems to build boost fine. Altho I havent been going above the 8 psi at all.

Any info would be great.

Cheers

[skeg_man]

Posted in wrong forum guys. Can someone pkease move it?

[mad082]

have you not been able to go above 8psi because of your lack to adjust the boost, or because there is some sort of restriction stopping you no matter how much you set the boost controller to run?

if the latter, then you either have a boost leak (either a gasket is shot or there is a split in a hose, etc) or there is somthing (possibly packaging from the plenum) caught in the plenumn.