Which Power Fc Will Suit My Stagea?

[RubyRS4]

Which Power FC will suit my S2 Neo RB25DET Stag and be a direct replacement for the stock ECU?

R32/33/34 GTR

R33 GTST

... and so on and so forth.

Edited May 1, 2008 by RubyRS4

[GoldZilla]

Which Power FC will suit my S2 Neo RB25DET Stag and be a direct replacement for the stock ECU?

R32/33/34 GTR

R33 GTST

... and so on and so forth.

Hey Reuben, if your Stagea is an auto, there is NO PowerFC suitable as a direct swap, because the PFC does not have any software/hardware to control the gearbox. I've heard (but cannot confirm) that some people have been using the PFC with a shift-kitted (and maybe manualised?) auto. Tangles might have a bit more information there.

If you've got a manual s2 Stagea, then the PFC to use is the R34 version, with the "secret squirrel tweak" for the traction control which is standard on the R34, but not found on the Stagea.

[RubyRS4]

I figured as much. Thought the auto would be different ... next time I'll mention its an auto too

I know the PFC is a standalone ECU, but could you still retain the stock ECU to run the auto? Or is it wrong to share signals for that function?

Tangles ... info please

[GoldZilla]

I figured as much. Thought the auto would be different ... next time I'll mention its an auto too

I know the PFC is a standalone ECU, but could you still retain the stock ECU to run the auto? Or is it wrong to share signals for that function?

Tangles ... info please

You probably could still retain the factory ECU, but the PFC is a full replacement unit, so it would take quite a bit of work to set up two computers to do that.

If I were you, I'd look at getting some piggy-back modules (such as the Apexi S-AFC and AVC-R, or their JayCar equivalents - there's plenty of info here about them already), or getting a piggyback computer like the GReddy E-Manage Ultimate(?) to control fuel and spark, leaving the standard ECU to control the box, etc,

[dmonic1]

RWD stageas have traction control well mine does anyway, i have an on/off button on the dash for it. i thought the secret squirel tweak was to stop the coils burning out. there was an article on an R34 auto with a shift kit running a haltech in an issue of fast fours or hot fours a little while. apparently with no problems???? i might try and find that issue and post it up.

[Duncan]

no the tweak is to provide a traction control input for cars that don't have it - series 1 does not.

Also be careful, there are 3 different looms in s1 stageas and the pfc only works on 1 of them without modifications. I have another thread in here about this with same ECU part numbers

[GoldZilla]

Here's the link to the thread Duncan is referring to: http://www.skylinesaustralia.com/forums/R3...S1-t205298.html

[wolverine]

the issue is that the R34 powerfc pin 51 is for the R34 traction control. when there is no signal it throws an engine check light. the "secret squirrel" tweak is to send approx 3.6v (or whatever it is) to the powerfc thus turning off the check light.

on a S2 stagea with traction control it will probably just bolt in and work.

[wolverine]

Goldzilla is spot on a powerfc with a shift kit would be the way to go alternatively and possibly a better option for an auto is chipping the factory ecu eg. Nistune or see Toshi's advert in the classifieds section.

[yokotas13]

whagt about a 96 s1

what PFC would i use?

[wolverine]

it seems to come down to the plug.

the R34 PowerFc seems the go for S2 and for some S1, although Duncan has found there are 3 variants on the S1 see below.

Edited May 1, 2008 by wolverine

[Duncan]

they all run r34 gtt powerFC. but not all of them will run without wiring mods. details of numbers and dates are in the other thread

[RubyRS4]

You probably could still retain the factory ECU, but the PFC is a full replacement unit, so it would take quite a bit of work to set up two computers to do that.

If I were you, I'd look at getting some piggy-back modules (such as the Apexi S-AFC and AVC-R, or their JayCar equivalents - there's plenty of info here about them already), or getting a piggyback computer like the GReddy E-Manage Ultimate(?) to control fuel and spark, leaving the standard ECU to control the box, etc,

Thanks for the info ... I think I'll go the SAFC route then

Shopping for one now! I wanna wind up the boost on the Stag

[Tangles]

IF you do the Power-FC R34 GTT mod, you WILL need a) MV Auto shift kit for auto changes, to minimise gearbox damage thru lack of ignition retard on gear changes, eventually the gearbox will blow tho., b) you'll need luck as Duncan suggested, 3 different looms. S2 may plug and play with the secret squirrel trick, but its a risk.

Mine all worked, but I decided NOT to go ahead as I cant afford a gearbox rebuild. I sold the p-fc for what I got it for.

Currently dealing with Toshi for a ecu remap, my particular Stagea S1 ecu needs a small ecu - to - large ecu adapter plate soldered in, plus the ecu chip. looks to be around $650-$700 but unsure as at the moment.

Hope to have this sorted out in the next month, so will keep you updated. Chatting with Toshi every second day, so give me/Toshi a month or so and I'll report back in.

Once i get the ecu remap (wont be prefect as we are in different states, it'll be a guestimate), I'll have it soldered in and my car tuned with the SAFc/SITC still (fit hks actuator for 14psi stock boost) and let you know how it goes. he can remap for z32 afm, 040 bosch, highflow turbo like 2530 or 2540, 14psi, and use the safc/sitc for adjustments afterwards at your local tuner.

[Tangles]

Rub's, Id suggest a SAFC Neo, an SITC if you can find one, a good 040 Bosch pump, a Z32 afm, and Nismo adj.FPR

tune all at one for a 180awkw tune

ppl will say the Nismo FPR is all bad, but they arent correct IMO. it helps when tuning a safc.

[RubyRS4]

IF you do the Power-FC R34 GTT mod, you WILL need a) MV Auto shift kit for auto changes, to minimise gearbox damage thru lack of ignition retard on gear changes, eventually the gearbox will blow tho.

I won't go the PFC route now. But will it still pay to get an auto shift kit ... and what exactly does it do? Even with the shift kit it will still blow? I won't be lead footing it everywhere, 95% of the time putting around.

Rub's, Id suggest a SAFC Neo, an SITC if you can find one, a good 040 Bosch pump, a Z32 afm, and Nismo adj.FPR

tune all at one for a 180awkw tune

Thanks for the recipe I'm going that way with things then.

Wouldn't any fuel pressure reg do the trick? What about a rising rate FPR?

[Tangles]

rising rate FPR's such as Sard are harder to tune the safc.

(according to SK)

with the nismo adjustable fpr you can bump up fuel pressure by say 2psi, and that way takes a little load off the injectors duty cycle

easier to tune the nismo fpr with safc then the sard from all Ive heard/read.

the shift kit will maximise the length of the gearbox life, should extend the life, will get quicker shifts, minimises the time the ecu retards the ignition on changes, definately a AAA+ modification to do. install shift kit and auto service at MV Autos is around $400

[bernardshorty]

hey guys my s1 is converted to manual but i think it still has the wiring mod so if anyone needs it i can get the colours of all the wires and can also take pics if it helps cheers bernard .

[dmonic1]

ok so at a guess, with my S2 which is an RSV RWD only with traction control i should be able to plug in a R34 pfc and just be able to drive my car to a tunning shop. it is an auto but i dont really care when the box goes as it will get me off my ass to put a manual one in. i only have a filter and an exhaust so far but more mods are planned. anything else i should know? does the pfc have the capability to upgrade the AFM to Z32 etc.

[wolverine]

yes, powerfc has a menu to change AFM's.

it should bolt in like on any S2 and runt he car but yours should/may/might not need any other modification as i would guess the loom will be identical with traction control to the R34 GT-t so no engine check light (after you switch off the boost control kit on the powerfc menu).

Edited May 2, 2008 by wolverine