[s-cars] Whistling

[Brett Dikeman]

On Fri, Oct 16, 2009 at 8:10 PM, JC <jc at j2c3.com> wrote:
> How's your hoses, BPV, and N75?  Typical whistling culprits are: vacuum and
> boost hose leaks, failed/failing BPV that doesn't open/close properly, etc.

Everything upstream of the throttle only sees atmosphere or higher
pressure (exception: air filter -> turbo) and would not make noise at
idle.  So, anything plugged into the IM.

Brett