Just got the car back, they smoke tested all hoses etc no leaks. They put the car on the rolling road and the cars is running expected boost, so its still running the correct boost levels etc for revo stage one. They visually inspected the turbo and checked the dump valve and everything seems fine.
They cannot find a fault with the car at all, they feel its just excessive induction noise. I have to also admit that i am very fussy and pick up on small
noises etc very quickly. The noise can only be heard at certain times and only on full throttle at 3 thousand revs - 3.5 thousands revs. Also to be able to hear the noise the radio needs to be muted and the road surface has to be smooth otherwise the road noise drowns it out.
They put the car back to stock mode and the noise is no longer there. So im guessing upping the boost casues the excessive induction noise at 3 - 3.5 revs.
The car feels as quick as it ever has done on revo stage one, so as long as the noise doesn't get any louder or the noise develops further across the rev range, im going to leave it as it is