Jump to content
SAU Community

Recommended Posts

Ok guys for the latest rundown on a dyno. I could feel holes in the power curve through seat of the pants driving in this showed up badly on the dyno. Between 5000-6000rpm the power curve dips and ive had this dip all along with every dyno run its been on with either the stock turbo or the 2530. So it means time for a power fc. It is not fuel, we tuned fuel around the mid 11's to 11.7. Peak power was 224rwkw. We could get boost to 17.8psi in the midrange and this dropped off too 10's with the boost controller. So i disconnected the boost controller and ran it straight to the actuator and then boost dropped off too 12.5psi at max revs. Mid range is still impressive recording 150rwkw at 3900rpm.

So in a nut shell, the SAFC has done its best, there are too many hiccups at the moment and until we can get in there and play with the timing, this is as far as it goes.

We tried even a little bit more boost but then we reached some sort of cut-off which must be boost cut or something.

Ok guys for the latest rundown on a dyno.  I could feel holes in the power curve through seat of the pants driving in this showed up badly on the dyno.  Between 5000-6000rpm the power curve dips and ive had this dip all along with every dyno run its been on with either the stock turbo or the 2530.  So it means time for a power fc.  It is not fuel, we tuned fuel around the mid 11's to 11.7.  Peak power was 224rwkw.  We could get boost to 17.8psi in the midrange and this dropped off too 10's with the boost controller.  So i disconnected the boost controller and ran it straight to the actuator and then boost dropped off too 12.5psi at max revs.  Mid range is still impressive recording 150rwkw at 3900rpm.  

So in a nut shell, the SAFC has done its best, there are too many hiccups at the moment and until we can get in there and play with the timing, this is as far as it goes.

We tried even a little bit more boost but then we reached some sort of cut-off which must be boost cut or something.

So what exacly was the cutoff? its not the safc2 not being able to controll the z32 obviously?

What would have been different if you could of controlled timing?

My engine is cutting out over 18psi for a split second in the midrange at max boost so it must be the standard Ecu shutting it down of boost cut. Anything under 18psi and its fine, not cut and no misses.

Standard ECU must be pulling out a heap of timing during the power runs. We need to get in there at giving RPMs and put it back in.

My engine is cutting out over 18psi for a split second in the midrange at max boost so it must be the standard Ecu shutting it down of boost cut.  Anything under 18psi and its fine, not cut and no misses.

Standard ECU must be pulling out a heap of timing during the power runs.  We need to get in there at giving RPMs and put it back in.

ahh ok so its just over 18psi, well thats understandable :cheers:

so besides that;

the safc2 with dyno tuning can run the z32 afm on standard computer perfectly?

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


  • Similar Content

  • Latest Posts

    • I don't know for sure, but I'd expect them all to be interchangeable given the diff end and hub end don't move/change between any C34 series. Often Nissan will change part numbers and the aftermarket follows those year ranges; but the original part number change doesn't mean other parts won't fit. The change could be a change in material, internal parts or even just supplier. For example, all the RB gearbox to engine bolts are no longer available and there is a new part number instead. The only change is they went from cadmium plated bolts to zinc plated due to the issues manufacturing with Cadmium. They look different but work the same.
    • One year is a bit concerning. Did you try contacting GSP? It says 5 year warranty on the box if I remember correctly. I'm also running their driveshafts on my S2 Stagea.   You could check the part numbers on Amayama for your year. Here's the link for my 1998 which gives the 39100-23U60 part number. Well, that and 39100-23U70. https://www.amayama.com/en/genuine-catalogs/epc/nissan-japan/stagea/wgnc34/6649-rb25det/trans/391 What does it say for yours?
    • I ordered a GSP Front R/H Axle from here - https://justjap.com/products/gsp-premium-front-driveshaft-r-h-nissan-r32-r33-r34-skyline-gtr-stagea-4wd#description It lasted around a year before one of the boots blew out. I'm lowered, but I have GKTech roll center adjusters. One year seems a little premature. I think I'm going to spend the extra money on an OEM cv axle this time. This website - https://tfaspeed.com/collections/nissan-stagea-wgnc34-x-four-parts/products/nissan-stagea-awc34-260rs-rb26-right-front-axle-drive-assembly Makes it sound like the readily available OEM CV axle will only fit 11.1999 Stagea and up (mine is a 2.1997 S1). The JustJap listing didn't mention any years or anything for the GSP axle. Amayama shows '11.1999' and up as well for that part number. As well as 'plastic boot type'. See attached picture. So I guess my question is, does that axle (39100-23U60) really only fit S2 Stagea? It's the front driver side. If it does, I'd love to buy that instead of rolling the dice on another GSP. I've found that OEM one cheaper here: https://www.partsfornissans.com/oem-parts/nismo-jdm-r32-r33-r34-skyline-gtr-r32-gts4-right-front-axle-3910023u60 and here https://www.nissanparts.cc/oem-parts/nismo-shaft-ft-drive-3910023u60 Just a little confused because the JapSpeed listing for the GSP front driver axle doesn't mention any specific years or anything and it fit my S1 Stagea fine. So will 39100-23U60 fit my S1 Stagea even though technically it says '11.1999' and up? What would have changed? Thanks.  
    • Thanks for the info. The only "Issue" I've had with the shifter is I always found the throw between 4th and 6th gear too close. I'm always worried to shift into 4th accidently and sending my motor to the moon. Adam LZ recently came out with a video and stated Serialnine revised their shifters to correct this and will change all the revised parts for 150$. Strangely enough, I contacted Serialnine right after and they denied it and said it's bullshit. I found that strange as he's a distributer. I'll keep this forum post updated on that saga.
    • Yep that is correct. It allows you to adjust the short throw range from what I can tell
×
×
  • Create New...