Jump to content
SAU Community

Recommended Posts

updated again:

fixed missing image

fixed spelling mistakes

fixed grammar mistakes

added hyperlinks for each section

added section split based on content

added self tuning - fuel economy

added info on changing airflow meter

added info on powerfc tune protect

expanded info on tuning options and expected results

  • 2 weeks later...

do they release slightly differant maps in the diff versions of the pfc/hand controller maybe ?

I was comparing my ign map to the one in the faq, and in some points (outside of the first 10x10 range) they were off by like 10 degrees. I also compared them to the ign map in the FC PRO software, they was differant as well.. ??

Mine is pfc v 5.11, and hand controller v5.01A (might be the other way around)

Wered you grab the stock map on the faq from ?

as far as i know the stock maps don't change very often

i havent at least heard they do. they were taken from my tune

but i may have done it before i did factory reset so they could be a "tuned" ign map. when i get datalogit, ill copy mt tune. reset to factory defaults then upload the defualt maps to my site and then restore my tune and upload that as well. ill expand the powerfc faq a lot when i have a working datalogit

added boost control pics, info and wiring

added djetro harness and wiring and manal

added datalogit specific extra features

added datalogit logging options

added datalogit additional functions

corrected spelling mistake of my name

corrected double up paragraph

updated again:

added airtemp sensor on unsupported car info

added powerfc inside cover photos

added reflashable powerfc info

added custom hack / diy / hand controller holder pics

added basic hand controller use

added checking sensors

added checking functions

updated install info

those 2 manuals are old as the hills and are for rx7. They are also the older powerfc so its not upto as the japanese SR20/RB25/RB26 manual.

it comes off the main wiring haress which i think is a digital output from the gearbox somehow, ill find out

It most certainlly a gearbox feed... The only other alternative is the ABS sensors but it still works on non-ABS skylines so it must be a gear box feed....

Plus the skyline has a digital sendor to the dash display....

hey guys i have a question for those in the know

because the nvct cam timing is constantly variable on the NEO rb25, can the PowerFC be mapped for this function, or how does that work?

with the r33 rb25 its either full advance or full retard no inbetween. and is activated by a simple on/off switch in the ecu at the desired rpm.

anyone know how the powerfc and rb25neo nvct perform?

is it completley mapable throughout the entire rpm band or whats the go?

no idea but if you find out let us know, will add to powerfc-faq

the vvt on the rb25 (33) isnt controlable and its automatically controller by the powerfc emulating stock ecu functionality. you can see it turn on and off under check sensor / sw but its not controllable or editable in map form

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

    • Thanks everyone for the replies and suggestions. Got the seats out (hoping I could find some existing grommets but no such luck). By tapping and measuring etc. I could figure out where I could drill through if needed. But first I borrowed an inspection camera and managed to go through factory holes in the chassis rail and could see that the captive nut was holding steady which is why it could retighten. So it was indeed a stripped section of thread, so I applied downforce by levering the bolt head with a screwdriver and went slowly back and forth until it came out. Camera helped a lot cos I could monitor that the captive nut was holding tight. Now I just have one very seized main subframe nut to tackle 馃槄
    • BOVs do have a purpose, if you ever log pressure before and after the throttle body, you will see a spike pre throttle on lift off from a WOT condition. Enough to bend throttle blades / damage e-throttle motors or simple assist in blowing off cooler pipes. FWIW, the above on really applies to those running at least 2 bar of boost. OP shouldn't have an issue, on the other hand, here are some videos of my shit box over a decade ago with some succulent dose with the airbox on and off. That shit box is unrecognisable these days 馃珷    
    • I've tried all different combinations of BOVs/ no BOV and stock bypass valves over the years, on gear changes the stock bypass valve seems to get the car back on boost quicker because in part the turbos wheel speed isn't being slowed down by reversion, although they have issues holding boost much over the stock setting. Most aftermarket BOVs you can adjust the spring, tighter will make it open later and close sooner, but in my experience it'll cause a bit of flutter at low load/rpm anyway. I've also got some input into this whole no bov causing turbo wear, never had an issue on any on my turbos HOWEVER, I got my R33 GTST with 200k kms on it, with from what I can see still has the original turbo, no lateral shaft play but has about 4-5mm of play in and out which to me seems like a worn thrust bearing from years (100-150k kms?) of turbo flutter running no bov, so maybe there is some truth to it in the long run. But that'll never stop me loving the Stutututu while I have the car.   OP just wants to know if he can run a atmo vented BOV with no major issues and the answer is YES, plenty of people do it, there's no harm in installing it and seeing how it runs before spending $$$ on an aftermarket ecu, last time I bought a Nistune it was $2400 for install and a tune , unsure of todays prices but you get me. Crazy money to spend just to fix the minor inconvenience of stalling that can be overcome by letting the revs come down to near idle before putting the clutch in or a little bit of throttle to avoid it. You're better off leaving the ecu and tune for after a bigger turbo/injectors have been installed to take full advantage of the tune and get your moneys worth.   Let OP have his Whoosh sound without trying to break his bank haha
    • I see you missed the rest of the conversation where they have benefits, but nothing to do with avoiding breaking turbos, which is what the aftermarket BOV made all the fan boys, tuners, and modders believe was the only purpose for them...
    • But they do so for the other reasons to have a compressor bypass. It's in the name.
  • Create New...