13b turbo spool noise??
 

Today I noticed that when the turbo kicks in around 4grand there comes a kind of high pitched whistling kind of sound as the boost kicks in all the way till
I change gear. I've never herd it before today. Any one have an idea what's happened? Or if this is normal? It sounds like Normal turbo
Spool but it's allot louder than when I got the car a 2 weeks ago

If the sound is louder than it was before, you may have a leak in the intake system. The TID (turbo inlet duct) is notorious for cracking, and it will also lead to idle problems due to unmetered air entering the system.

Yeah was a leak. I found a small unplugged hose coming off the pipe from my air filter box

saved you alot of headaches

Shure did haha. Thanks