The whistle is because you have a chinese throttle body on the engine(snipers are rebranded Alibaba). The chinese IAC port is machined poorly, wrong angle, size, etc. With a brand name one like Edelbrock or Nick Williams... Ive never had a noise.
I definitely agree with this. The IAC port was not only small but very deep and the opening edges were very sharp. I just got a GM 87mm for $40 from the salvage yard works great.
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
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