I have a 2006 V8 Raider that I am getting a high pitch whistling sound when I am under light load. When I am in neutral or park, I don't get it.

I believe it might be a leaking exhaust manifold. Anyone agree, or had something like it?

 

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.

 

i pulled my filter and rode a little bit and nothing, i might just pull the intake all together and see whats up.

 

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.