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View Full Version : '01 GT whistling?


blackgtbeauty
10-13-2007, 09:07 PM
When I accelerate, up in the upper RPM's (3kish and above), my car sounds like a referee w/ asthma, a loud ass whistle.

I put the stock setup back in, I've tried a homemade intake, just a cone at the end of the filter box and the box empty, no cone and just a filter in the box, all the options with stock filter and with k&n, I can't really figure it out.

Anyone else with this problem?
shazapple
10-13-2007, 10:05 PM
usually whistling is caused by the roofracks, mirrors, or the drainage hole on the muffler.
97LGT
10-13-2007, 10:36 PM
my car whistles whenever i punch it.
it was discussed before http://www.sl-i.net/FORUM/viewtopic.php?t=2929
some people refer to it as a "phantom turbo"
i don't think it's anything to worry about. mine has been whistling for over 2 years and i don't have any problems.
Reason
10-13-2007, 10:56 PM
Phantom turbo lol thats great.

So is this noise coming from under the hood? You are assuming it's the intake system? Maybe some sort of vacuum leak?
Wiscon_Mark
10-14-2007, 12:09 AM
I'm guessing vacuum leak.
Sarra
10-14-2007, 10:20 PM
Mine whistles in fifth gear, remarkably like a turbo sound around 70 mph. But, that's from the gearbox, dunno about the phantom turbo sound...
sharky nrk
10-15-2007, 07:08 AM
lol mine makes so much noise from different areas I couldn't hope to discern one imparticular one - but thanks to this thread I will just tell people its a "phantom turbo" and smile :grin:
blackgtbeauty
10-15-2007, 10:38 AM
That's funny, it does sound like a turbo with no blow off.

I'll have to check all the hoses and what not again.
SilentRacer
10-15-2007, 10:44 AM
My BE does the same thing. Phantom Turbo :lol: ....thats what it sounds like.
MCarp22
10-15-2007, 10:57 AM
I'm going to vote for the throttle body causing the whistle, my jeep and a friend's honda did the same thing.
blackgtbeauty
10-15-2007, 11:37 AM
Makes sense.

I tightened the bahjesus out of the hose clamp that holds the airbox to it, still does it. I'm saving $ for a swap so i can deal with it for a while.
deadlydave
10-15-2007, 11:53 AM
Makes sense.

I tightened the bahjesus out of the hose clamp that holds the airbox to it, still does it. I'm saving $ for a swap so i can deal with it for a while.

It is the "phantom turbo". My legacy did it, my baja does it a little bit...thought that actually has a turbo. A K+N filter made it really, REALLY pronounced.
sansMYSTi
11-14-2007, 10:26 AM
My wife's Outback has the same whistle, and so did my Leg - a SPT axel back made the whistle go away. I seems to be a very common afliction with the BE/BH.
Chicago96GT
11-14-2007, 12:09 PM
I know that its not a subaru but one of my friends car was whistling and it turned out something was wrong with a valve, i dont remember what it was but it had to do with his valves. Anyone ever checked that?