Hey guys my car has developed a really weird and annoying noise when coming on boost, but it doesn't do it at WOT only like 1/4-1/2 throttle, instead of me sitting here and trying to explain what it sounds like I attached a video clip showing revs and boost, please help me out, thanks.
Car is a R34 GTT, turbo back 3" exhaust, front mount, Apexi Power FC, stock turbo 12psi, BCPR7ES plugs, stock BOV.
From Inside.
https://www.youtube.com/watch?v=NyyEm09SHik
and from outside.