I have a 98 ls non vtec an there is a spot in the throttle where it starts to whistle like crazy but if you give a little more gas or little less its fine. Its not the intake know that for sure just no other ideas

 

You sure its not the intake? Is it an aftermarket intake with filter?

 

All Integra factory throttle bodies do this (many other cars too).

You just can't normally hear it with the factory intake in place (except for some of the Civic Si models where they didn't use a resonator box in the intake track). If you have a CAI or "short" intake, then you can hear the TB whistle much easier.

 

lol yep mine whistles also

 

True, if you have a aftermarket short ram intake it will do it. I use to have a 1998 Integra LS with a AEM short ram and it would whistle.

 

Clean you throttle body and butterfly valve, probly some carbon on there.
It's very common, both my civics have done this cleaning it helps.

 

Yeah it was doing it before I put the intake on its not a short ram Thoe

 

Stock intake whistle?? hmmm.. What are you running now CAI? and has the noise changed while running the aftermarket intake?

 

^^^ He's right.

 

i used to hear it with mine with a short ram intake on it. but now since i've upgraded to the full carbon fiber " whale ***** " intake its 100x's worse haha

 

Put bigger cams in and you wont be able to hear it anymore.

 

Same issue here, though I don't call it an issue. I am running a ported ITR TB.
Mine is quite wide range, TB whistles at 1-3K rpm at when I am at mid-full throttle.

In my case, it was the wind rushing past the idle screw hole. I adjusted the idle screw about one turn (actually I did it bit by bit, one turn was the point it disappears) and after that point, the whistle sound disappears. of course, now my car idles at 1.5K and fuel consumption goes down the gutter.

Of course, I also wondered why it whistles only at certain rpm ranges and certain map portions, so I proceeded to test some shitty theory of mine.

Just rehoned my block and upped capacity, so now road tune for my car at 1-4K rpm during run in, since it's a daily driver, and FC is paramount.

I think it's a sign of a good setting maybe? (totally an opinion, no facts) since when I messed around with the ignition timing, it disappears. MAF sensor installed at intake pipe (i used to measure air flow with Auxbox) shows that when flow increases, I get the whistle. I can also create the whistle by pushing ignition higher at idle and tuning fuel to suit. To avoid it, I just detuned ignition and set the idle at a point where it's generating only enough power to maintain the rpm and load maps on the hondata ecu.

Perhaps I'll get around to modifying the idle screw hole to see if I can eliminate the whistle, but meeh, the sound's not that bad, if it ain't broke, don't fix it.

Do note that this is in my case, in your case, the whistling could come from somewhere else.

 

My gsr does it too, and I just put an aftermarket intake manifold on it and its now twice as loud Hahahaha

 

sometimes the whistle can be a sign of an incorrectly functioning pcv system. check pcv operation. only takes a few minutes