I've noticed in the last week or so a high pitched whining while under throttle. I can hear it when usually in 7 or 8th gear and between 1-2k rpm.

I've gone ahead and removed my JoeZ intake tube and hose clamps and reseated everything and there's a good seal.

Thoughts? It's annoying, the car is due for it's 25k service soon and just wondering what it could be. The Throttle body looked clean when I removed the intake tubing.

 

Does it sound like a supercharger whine? I get that sound when i give more than partial throttle on a cold start...

 

I'll take your JoeZ tube if it's blue and if your willing to sell

 

It doesn't sound intake pipe related..

Is the air box flap working properly??

There is a foam seal there and it might be torn up..

Joe Z

 

Mine does that too, My friend was like you supercharged your F already? lol

 

I agree it's not the tube, I just removed the intake bits to reseat them thinking there was a intake leak. The tube has been installed for probably 20k+ miles now.
My car sure sounds supercharged when at higher RPMs. lol The intake flap opens at is should at about 3600RPM. But could have a leak at the foam.

 

have you noticed any power increases? maybe your car snuck out in the middle of the night and got itself a blower

 

I sometimes hear that too. It's like a faint supercharger whine. I've had friends say it sounds like a jet taking off. lol

 

I had the same thing on my previous IS350. It had a whine around 62/63 mph while just cruising. It's funny, you could set the cruise control on about 62 and it would whine any time it gave it gas. I never did figure out what that was.

 

I could hear the whine before the exhaust changes, not anymore.

 

Are you listening to music too loud or did you install an upgraded audio system? I used to have alternator whine in my old car that I had subs in... happened sometimes when I would accelerate...