I have a whistling / beeping noise under the hood of my car when my car idle's, it's allmost an electrical noise, it's there when it idle's, but when I give her a little juice so it goes rev's a little higher, the noise dissapears. I first thought it would be a belt, but all the belts are tight, so I checked for leaking hoses, allso none so far I can see.

Somebody knows what the heck could be wrong?

I have 257.832 km's on the car, and the car runs perfect. Although I have a rough starting problem if the engine is cold, it takes a while before it turns over. When it runs it runs perfect, except for that damn noise.

Hope you guys can give me some answers...

GreetZ, Mitch

Oh yeah, for some info:
Model A32
VQ30DE with MEVI intake