I know there are alot of stupid people going to tell me its my intake making the whistle and let me tell you (its not) It's somthing electrical and im hoping somone has an idea of what it just might be! Any help?its a 91 Ef hatch with a b18b swap i have a 70mm T/B but i checked it and its not leaking at all!??????????????????? it only happens when i not giving it gas when i push on the gas it stops

 

ttt

 

pull on the throttle while looking at the engine
see where its coming from
its impossible to diagnose from the internet

 

i did, but i still cant hear exactly where its comming from!

 

Alternator? No, whistle tip in the intake?

 

I know you said its not the intake, but are you using a skunk 2 intake? Mine whistles!

 

Some1 probably taped a whistle on to your bumper so when u drive it makes the noise lol

 

that might have been funny except you forgot to read the part where he said its stops when he gives it gas.

its gotta be the intake its nothing electrical that would make a humming noise

 

lol @ tapped whistle to bumper

 

im gonna tape a whistle to my exhaust tip.