Hey guys, just recently i've been getting this kinda whistling noise (not very loud), coming from somewhere within the engine bay while driving.
It starts up when my rev's hit around 3,000. My boost kicks in at around 2,500.
Doesnt appear to happen at all in first gear, but every other gear onward.
Anyone know what it would be? The turbo, something else?
Any help would be greatly appreciated.