Wills7MGTE said:I have an HKS SSQV vented to atmosphere and no problems cuz I have the auto, LOL. My bud jesse has same setup on a 5 speed only troubles he has are driving normal from a dead stop but from 2nd gear on shifting is normal. It's a personal preferance but I like atmosphere, plus you can pop some nice flames that way, and its fun to mess with people lol. Yes it is louder and more whistle vented to atmosphere and mine flutters from -15psi until vaccum or 1psi max then whistle from 2psi and up.
i think you have a vac leak..
mine whooshes liek soft air blowin out of a tube, in vaccume, and close to 0 starts to make a wistle noise, and 5psi very audilbe, and so on.. sice i found my vac lak, i have never had a surge problem again.