Anyone else have surging issues with SSQVs?

[annoyingrob]

I had a brand new, HKS SSQV (the new style) on my car ever since I singled the 1JZ, and ever since I had it, it surged like mad when I let off the gas. It ended up killing two turbochargers in short order. I tried various placements on my intake piping, from right beside the turbo, to right beside the throttle body, but nothing made a difference. Vacuum line is dedicated right off the intake manifold, maybe 8" long, but no help.


I ended up having to open it up, and REMOVE the spring inside to get it to stop surging. I thought this was very weird, and was curious if anyone else has had problems with SSQVs too?

I'm happy I fixed it now though. Now I can put on my brand new GT40.

 

[GrimJack]

Ya, lots of complaints with the HKS units. Mine is the old style that's adjustable, and it always flutters unless I boost up to ~10 psi before shifting, and that's on the lowest setting.

 

[Rennat]

Grim, would you say its "better" to run single/dual bosch 110's instead of a ssqv?

 

[Ckanderson]

Tial.

Done.

 

[WhtMa71]

:withstupi Or a synchronic BOV.

 

[Rennat]

i dont like tial's... they look ugly, and im not running maft pro yet

 

[s383mmber1]

Mine used to surge, so i now use TWO vacume lines on the bov, fairly big ones too.

No problems at all

 

[GrimJack]

Grim, would you say its "better" to run single/dual bosch 110's instead of a ssqv?

No... I don't think you can get the pure volume of air through that setup that you'd need at higher boost levels.

I'd rather surge at low flow rates than at high.

CK has the right idea though, Tial FTW.

 

[johnathan1]

Mine used to surge, so i now use TWO vacume lines on the bov, fairly big ones too.

No problems at all

How did you do this? My BOV has been fluttering ever since I installed my 57trim CT26...I have tried a few different BOVs, including a stock one, and they are all surging. It's not terrible, but it's not how it should be. My first thought was a vac leak, but my vac gauge shows 20hg/cm at idle. :\

 

[Ckanderson]

i dont like tial's... they look ugly, and im not running maft pro yet

thats fine. you arnt the OP and this thread isnt about you.

That being said I'd hardly base my BOV choices on "uglyness"

function>form.

 

[Rennat]

for me its also a price thing...

i know what you mean though, its silly to buy things based on how they look... if i had a maft system, then i would probably run a tial or something like it, but, i have just never liked the videos i've seen of them.

And would a bigger vaccum line to the BOV make a difference?

 

[IwantMKIII]

at very low boost i hear some periodically

 

[MK3Brent]

TiAL ftw...

 

[supra_ed]

i have a new genuine hks that does nothing but surge. how did u fix urs? wat did u do to the spring??

 

[s383mmber1]

And would a bigger vaccum line to the BOV make a difference?

Yes.

 

[giterboosted]

ok i just found this thread but someone please explain the simplest option i have to make it work, i have the updated unit, how does it work with the spring option? do i simply remove the spring?

 

[Ckanderson]

for me its also a price thing...

tial costs less.

 

[improved]

:withstupi Or a synchronic BOV.

I bought one to try out. I hope it works well.

Matt-

 

[Wills7MGTE]

I have had an HKS SSQV the older style i guess thats adjustable, never adjusted it right out of the box it has worked flawlessly granted I run between 8 and 11psi since I have stock fuel and HG setup

 

[evilone]

i got the old style hks unit myself and have been running it for over 3 years now and no problems as of yet.