FAST LSX R 102 intake whistle....anyone else?
 

I just installed a FAST LSX R 102 intake on my ls3 with my stock throttle body, at idle no whistle, under a slight load such as going up a hill it whistles, called fast and they recommended putting sealant between the upper and lower sections, so i did, but no change. I can find no vacuum leaks, anyone else experienced this?

I had the same issue but I was using a NW 102 TB. Once I went back to original stock throttle body the whistle was gone. So I found my whistle was from the TB not the intake.

maybe the seal? or the sound of the air entering the intake?

That's weird. My '99 Beemer whistles at idle, and I can't manage to find the source after many attempts--many have experienced the same thing (plastic intake, by the way). It doesn't seem to affect performance . . .

this one doesnt effect performance and only really does it about 1700-2500 rpm under load, weird...think i may try to seal the tb another way than the seal that came with the intake and see what that does.

spray some throttle body spray around the intake while running. If the RPMS change you will know where its coming from. Is it possible the sound difference you are hearing is the difference between the intake and the stock intake with the sound cover over it?

Where do you have your pcv line off of your valve cover plumbed? I've seen this when the hose is connected to the air intake tube.

Exactly! Or.... Not plumbed ar all!

tried spraying and no leaks found anywhere....nothing going to air intake, hoses from valve covers go to a catch can....so :headscratch:

...perhaps someone installed a turbo kit while you were away, and you haven't noticed it yet?

Some Malibu boats with LS engines have had this issue. I believe they made a plate/gasket for TB.

Have a look over on Malibu Crew, there are a couple of threads there on the subject.

Nope double checked and santa left no turbo under the hood....

Ill check that thread out, Thanks