High pitch sound at high revs

[danwheeler2k11]

Got some nasty high pitch sound at high revs when i giv the car a bit of welly duno what it is any ideas?

 

[gg205rob]

Is it just at high revs? Not on high boost?

 

[danwheeler2k11]

Ye both more likely full boost tbh

 

[AdamB]

Vac leak? Crack in the manifold.

 

[danwheeler2k11]

Ive checked the mani for cracks seems fine ill try look underneath bit but its wepr and i had it new should b bomb proof, ye more like vac leak as the noise changed when i changed the bov to a blitz one but for somereason the blitz bov is making the dump noise im stil gettin the turbo flutter

 

[Paul_JJ]

Ive checked the mani for cracks seems fine ill try look underneath bit but its wepr and i had it new should b bomb proof, ye more like vac leak as the noise changed when i changed the bov to a blitz one but for somereason the blitz bov is making the dump noise im stil gettin the turbo flutter

Well could be gasket on the manifold leaking somewhere! Ticking noise normally means crack in the mani.

 

[thefalls]

Have you relocated the air filter recently?
If yes then its worth checking its properly secured to the turbo outlet. Even the stock air duct gets loose and starts making a whistling sound when on boost.

Or it could be as the others have suggested above,boost leak.

Hope this helps.

 

[danwheeler2k11]

Gaskets new replaced when the wepr mani was fitted, i think it might b leak comin from the bov the rubber bit that goes into the intacoola pipe is a bit perished n shitty n the clamp that holding it on is shit could do with a jubileer clip or sumet