Jump to content
SAU Community

Hks Ssqv Installation Question

EVL-R33

By EVL-R33,
in Engines & Forced Induction

 Share

Recommended Posts

EVL-R33 Proficient

EVL-R33

Posted
Posted (edited)

I just received and installed a HKS SSQV Bov into my RB25DET the simple way, but after the installation I noticed on the instructions which came with it says to disconnect the battery (-) cable.. I didnt do this, does anyone know why it needs to be done prior to installation? or is it OK to leave it connected whilst installing?

Also, im getting a real bad boost drop when changing gears, almost as if its leaking.. Has anyone else got this problem with the new SSQV?

Cheers.

Edited by EVL-R33
Link to comment
https://www.sau.com.au/forums/topic/190441-hks-ssqv-installation-question/
Share on other sites
EVL-R33 Proficient

EVL-R33

Posted
  • Author
Posted (edited)
the reason they say 2 disconnect the battery is so that incase you touch sumthing u shouldnt and cause damage to the ecu or anything else

ah ok.. thanks 4 the quick reply raps86 :cheers:

does anyone know why im getting a bad boost drop when changing gears? almost as if the car is gonna stall..

Edited by EVL-R33
Col-GTSX Grand Master

Col-GTSX

Posted
Posted

Atmo valves can do this...

As the stock ecu is realying/expecting on return air post AFM...

By putting in a atmo valve your not returning the charged air back to the intake, hence the ecu is missing a huge chunck of "counted" air... So lack of air causes the engine to stall/labour for a second while the intake catchs back up to real time data being feed from the afm... Does this make sence?

The way to get round this is get a PFC or similar after market ecu which can be tuned with atmo valves and not have stalling issues...

r33cruiser Grand Master

r33cruiser

Posted
Posted

hey evl. i have had my hks ssq on my line for about 1yr. many people claim stalling issues. but it has NEVER happened to me. i think it is an urban myth that affects 10% of the population.

perhaps, the spring is too loose. i suggest tightening the screw on top of the bov. also from my experience, make sure the vacuum hose is on properly, same goes for the plumb back hose. ive forgotten this once and stalled 100m from my driveway :cheers:

EVL-R33 Proficient

EVL-R33

Posted
  • Author
Posted (edited)
Atmo valves can do this...

As the stock ecu is realying/expecting on return air post AFM...

By putting in a atmo valve your not returning the charged air back to the intake, hence the ecu is missing a huge chunck of "counted" air... So lack of air causes the engine to stall/labour for a second while the intake catchs back up to real time data being feed from the afm... Does this make sence?

The way to get round this is get a PFC or similar after market ecu which can be tuned with atmo valves and not have stalling issues...

Makes sence what your saying, but I have a PFC installed with a Z32 AFM and its been tuned on an atmo GFB BOV previously.. I had no problems with the GFB, but I thought id give the SSQV a go..

I have the newest SSQV so there is NO pressure regulator on it and I cant tighten the valve spring..

When the valve opens to release the air into the atmo, it takes longer to close than the GFB i previously had, so when I accelarate again after changing gears the valve is still open for a second and the air doesnt get into the plenum causing a stall/labour..

On a positive note, the SSQV holds boost much better than the GFB i previously had..

Edited by EVL-R33
  • 2 weeks later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      What brakes on R34 GTT(Europe)

      By GTSBoy · Posted

      The 296mm rotors are the R33 turbo brakes. The 310mm rotors are the R34 turbo brakes. The calipers are nearly the same, but not. They're the same caliper but the R34 caliper has longer legs so that it sits out far enough to go over the rotor. The pads are the same for both. When you say, "I bough tsome EBC"....did you just mean pads? Or rotors? 310mm rotors fit under 17" wheels. There may be some wheels without enough clearance though. I can't fit my fingers between the barrel of my wheel and the "corners" of my R34 calipers, but there is plenty of room behind the spokes. This is on Enkei RPF1. You can fit 324mm rotors inside a 17" wheel, but I'd be willing to bet that it would be close to impossible with the Nissan/Sumitomo caliper (using an adapter, of course), because the Sumitomo caliper is fatter than the Brembo caliper that is supposed to go on the 324mm rotors.
    • Kapr
      What brakes on R34 GTT(Europe)

      By Kapr · Posted

      Hi. Can someone tell me what brakes(and mainly WHERE) can i buy brakes on R34 GTT? I bought some EBC which SHOULD go on my car(i have GT but it has GTT brakes) but it does not fit, Brakes are "too" small(296mm) Are 310mm be good or? I have 17 inch wheel so no "big boys" but for me driving i just need one that fits and i can get here in EU/Czech.
    • Marek
      Hi everyone.

      By Marek · Posted

      Since winter isn't that harsh anymore in Poland, i will definetely drive it 365 days a year 😉. But if the snow hits i will try it for sure and let U know. Only swap i am planning to do is of course R34 GTR front 😍.
    • Marek
      WGNC34 - floor mats

      By Marek · Posted

      Hey. Very valuable information about pitwork, I will pay attention when buying any consumable parts 🙏 As for the carpets - I got a handful of information from nengun, from which it appears that indeed the carpets for the driver's side are OEM. They are not able to show me any pictures due to the long chain of different sales entities but after I place the order, as soon as the goods arrive at the nengun warehouse from which they will send the shipment to me they can send me photos and if my purchase differs from OEM I can immediately return it / cancel the purchase. I think I will give it a try 😉. Of course i'll let you know what's what as soon as i get them P.s. I know the topic is not relevant to the thread, but both nengun and amayama have these SICK 😍 trunk room lamps available. Do you know anyone who ordered them? I need to have one in my car
    • ARB26
      S1 Autech 260RS Wiring Diagrams

      By ARB26 · Posted

      I've managed to find this: Nissan_Stagea_AutechVersion260RS (1).pdf
×
×
  • Create New...