EVL-R33

Im getting a bad missfire on boost at around 4000-5500rpm. My mods are as follows: Series II RB25DET with: HKS 2530 turbo @ 20psi Splitfires + plugs 0.8 gapped PowerFC FMIC Bosch 023 pump 3" Split dump pipe + cat back Custom exhaust manifold Stock injectors @ 80-90% duty on 20psi Hybrid boost controller(which spikes badly) the most recent thing ive added is a HKS SSQV, can this be the problem? Or is it something else like an air leak? Im also getting knocking every now and then when i boost it to 20psi(mainly during the daytime in hotter weather), if I reduce it to 1 bar or 14psi there is no knocking or missfires. Anyone know what the problem could be? Cheers.

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..

ah ok.. thanks 4 the quick reply raps86 does anyone know why im getting a bad boost drop when changing gears? almost as if the car is gonna stall..

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.

you gotta love the 400R front bars..

i got this same problem, i hear a loud hissing like noise come from the plenum at high boost and notice my PSI drop from 20 to 15.. I still haven't got around to pulling the plenum apart and changing the gasket, but i'm pretty sure thats the problem..

Sold for $80.. Pending Payment. Cheers.

bump n grind..

Canberra, shipping shouldn't be more than $6 Auswide..

FS: Brand New geniune Nismo Shift Knob, still in box, also included Nismo gear sticker, paid $110 all up. Universal fit, suits all skylines. Price: **SOLD** PM me if interested.. Cheers.

Trust you 2 go 4 the boldies Ben..

SOLD**

very nice(borat voice) i like

whats your timing degrees tuned at? if you take out 1 - 2 degrees timing, you will get slightly better mid range power but less peak power..

PM Replied

As topic states, I need a stock plumb back BOV for R33 GTST S2 if anyone has one please PM me.. Cheers.

PM sent

im keen on this aswell, i need a new RB25 head.. but i need to know if there is anything wrong with it first?

The HKS GT-RS is an option.. but im not sure if the Garrett GT3071R is a bolt on for the RB25DET? what flange does it have? And im definately not going to just whack on the biggest turbo I can find without working the internals, I just want 260-280rwkw..

basically my question is, whats the biggest size turbo that u can buy which is a bolt on for the RB25DET (besides a highflow, which might be my second option down the track)?

My tuner told me that, apparently the 2530 is maxing out and i need a bigger turbo to get better peak power..

I've recently got a PFC tuned on my RB25DET and am getting 224rwkw @ 22psi with the following mods: HKS 2530kai turbo Custom TuneAgent s/steel exhaust manifold Split dump pipe + 3" Catback FMIC Bosch 023 fuel pump PFC + HC (currently on 40deg and 80% stock injectors duty) Z32 AFM Turbosmart T-Piece boost controller Also purchasing SARD 550cc injectors.. Mid range power is really good with the HKS 2530, but I want more peak power and if possible to have good/decent mid range aswell.. My question is, what replacement turbo can I buy to get around the 260/280rwkw range with my current setup (preferable side mount bolt on)?

Payment is pending for a buyer which offered me $250.. Cheers.

yes, id like to know this aswell?? also how much boost you been running through them?

PM replied, payment pending...