Mike Muise wrote:
>
> Now, I get the desired roar with throttle wide open,
> but at half-throttle, or anything less than WFO, I
> get what starts out as a high-pitched whistle, and
> changes to a sucking sound (if you want to hear it,
> bite your lower lip and inhale sharply) as the vanes
> open. I noticed that the original hat had a plastic
> fin inside, parallel to the direction of the large
> intake hose. I put in a slightly larger plastic fin,
> to see if it would attenuate the noise.
> <snip>
> So, now I turn to you: Is this normal? Anyone else
> experienced it? Or, better still, eliminated it?
>
Sounds normal to me. At part throttle (when you're starting to get on
it), mine makes more like what I would describe as a shrieking sound -
much more obnoxious than a little whistle. That roar at full throttle is
awesome, though.
I decided I can live with the noise for the time being to get the
increased performance. Eventually, I plan to change over to a fresh air
setup, which will probably get rid of the shrieking. Just have to get
back in the mood to tinker...
jeff
98 rc 4x2 v8 5spd 3.55sg flares fipk
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