JukeTunes

Had my SS since February. I noticed that it has an odd sound while boosting. Happens everytime it's above 10psi.

Video should be attached.

Any and all help is appreciated!

Juke

87ninefiveone

I get the same noise sometimes if I push the car into boost before the oil has come up to temperature. My assumption is that it's either a boost leak or the turbo is at the beginning of the end. To be fair I've not bothered to try and track the noise down and usually just let it come up to temp before I push it at which point I don't get the noise.

JukeTunes

I get that noise even when it is at temp. I'll look into a vacuum leak....any thought on maybe the bov? I read how the forge bov has a spring. Could the stock spring be worn out?

87ninefiveone

I've had BPVs go bad in an S4 with the 2.7TT before and those made a honking spound (think quiet goose noises) when you let off the gas once the diaphragm/valves inside tore. Never had an issue with BPVs on the other four turbo cars I've had so I'm not sure what the symptoms are in the SS. I don't think there's any reason to go with the forge unit unless you're chipped though as these don't seem to be a weak point like they are on VW/Audi engines.