[Rclarocque]

Originally Posted by dorkidori_s13

one of many things below is happening..

1) you have boost leaks (not uncommon). when you have even a minor boost leak, it will cause major vacuum issues. especially with the response from your SSQV

2) your SSQV is indeed fake. doesnt matter if your brother, your mother or your gold fish says its real. unless it was purchased directly from an authorized or well known HKS dealer, you may gotten a fake...which leads me to #3

3) if your SSQV is fake, then it will work like shit. there should be 2 different valves in the front of the SSQV, most fakes only have one. authentic SSQVs move in and out with ease, fakes tend to be fairly stiff. the diaphragms used in the fake SSQVs tear and wear out very easily so they will not create vacuum.

4) your vacuum is routed from the wrong place. not meaning this in an insulting way, but we all make silly mistakes with our cars at times. make sure you are running your BOV's vacuum from one of the two nipples located directly above your throttle body.

5) try spraying a small amount of WD40 around the front valves as well as the piston chamber (by pushing both valves in with your finger) to make sure everything is lubed up. work the valves in and out a bit to make sure a liberal amount of WD40 makes it into the needed areas. you can also take the valve off and spray some in from the bottom port.

6) your SSQV is not seated properly in the flange on the hotpipe. if the c-clip doesnt not seat itself in the groove completely to lock in the SSQV (by making its distinct "clink" noise when the c-clip expands and locks), your BOV will leak from the flange and possibly competely shoot off under higher boost amounts. also, did you make sure that the rubber o-ring wasnt torn or ripped in any way? i can speak from personal experience that the mass produced hot pipes (isis, circuit sports etc) use shitty SSQV flanges that require some minor modification to make fit the c-clamp and o-ring properly. if you didnt order an authentic HKS flange and weld it on yourself, the flange you are using may not be allowing the SSQV to seat correctly!


my best guess in all of this is either you have boost leaks, your SSQV isnt setting itself properly in its flange or your BOV needs minor lubrication.

Thanks a lot!!! I figure it's the flange, it is isis and it is a screw on, I'll get my old pipe and weld on the hks flange and hopefully that works! And vacumme routes are proper and just fixed my boost leak thank you so much