Hey guys, i have dejon charge piping with a hks ssqv4 bov in the rear positon and the bpv block off plate and when i build boost and rapidly let off the throttle i get surge like crazy but if i let off slow the pressure gets let off smoothly and doesnt surge at all. What can i do to fix the surge when i let off rapidly? When i let off slow i can barely hear the bov and what fun is that? ;P

 

well technically it's flutter dump not compressor surge. And you can fix it by getting rid of that bov. Someone asks this same question almost weekly and the answer will always be the same, these cars hate HKS bovs, they're not meant to be run on a recirculated setup.