Not sure if this is normal or not. When running the AC, I hear a noise durring light acceleration and when slowing down. Hard acceleration I dont hear it. It kinda of sounds like air rushing out and lasts 2-3 seconds. I'm positive its comming from the engine bay. I never hear this with out the AC turned on. Im prety sure its not the BOV since im not in boost. No engine mods or exhaust mods.
If its normal im not worried. But if something isnt right I want to bring it in. I'm just looking to see if anyone else has heard of this.
This is on a 06 WRX