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.
__________________
72 Chevelle. 370ci LS, Forced inductions S476, SpeedTech Suspension equipped, C6 Z06 brakes
|