Re: HKS SSQV Fluttering
 

Changed the vac source to the brake booster and still got nothing. Took thhe bov appart and inspected and everything seemed to be in working condition.

Re: HKS SSQV Fluttering
 

when the car is at idle the bov should be open ,check if it opens.

Re: HKS SSQV Fluttering
 

Ah not true for all BOVs. Usually only ones designed for superchargers stay open at idle.

Re: HKS SSQV Fluttering
 

that flutter is normal for the ssqv. it is not compressor surge. ssqv is a duel stage bov hence the sequential in the name. lower boost levels will flutter like a nasty queef. higher boost levels will give you the second stage "CHIRP!!''. my ssqv sounds exactly like that video on lower boost levels.
heres a video of what compressor surge really sounds like.
http://www.slammdsol.com/tony1.wmv

Re: HKS SSQV Fluttering
 

diaphram bovs are the ones that are usually open

piston ones should stay closed.