When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Could be your air intake system. Usually an exhaust leak makes a click sound or sounds like a chain hoist, lol. For a whistle I would check your intake then exhaust.
Ok, it was because I cleaned the TB. I guess I had never heard it before because I had the stock intake with the bellows. Thanks for your help Blown287.