whistle at around 4000 rpm and upwards

[50spence]

]hi guys . i got my self a problem with the turbo i think or maybe just a splitt pipe but when i give the car some juice and the turbo starts to kick in i keep getting a whistleing noise ?
has enyone had this problem or do eny of you now what it could be .
eny suggestions ?

 

[EZ Tutty]

i had this recently, was a boost pipe which was fitted a bit shonky.

Check all your pipes

 

[Berg]

i also had this after having my clutch done

intercooler pipe wasnt on properly

 

[50spence]

thanks

cheers guys