Using A Rb25det Pfc On A Rb20det

[kwazza11]

Well i'll be running an rb25 pfc in my rb24det using the rb20 loom and sensors in the next week, from what i can see of the wiring diagrams carl h is correct. should just bump and run.

[SirRacer]

Well i'll be running an rb25 pfc in my rb24det using the rb20 loom and sensors in the next week, from what i can see of the wiring diagrams carl h is correct. should just bump and run.

when using one of these does all the options show correctly on the power fc controller?

i also was under the impression the series 2 ran different coils, the power fc's have the same part number so is that more wiring related?

in respect to the gtr power fc, from what i also understand it runs exactly the same pin out however the afm's need to be run in parallel and likewise with the oxy sensors. is this correct?

[Roy]

This could be good news for R32 owners. But call me silly, its till nice to start the car and see the handset sat R32 GTST Power Fc

[carl h]

when we tried this on my buddies car it booted up fine and started right away, put it into the monitior mode and it displayed everything that would normaly be displayed on the rb25pfc.

played around with it and to check that the car was indeed running right lowered the revlimit to 1.5k and low and behold it cut at 1.5.

[sky30]

So anyone got a copy of the R32 GTR ECU pinouts??

Are they the same as GTS-T?

[CruiseLiner]

So anyone got a copy of the R32 GTR ECU pinouts??

Are they the same as GTS-T?

hey mate heres the pinouts for r32 rb26 ecu

rb26 ecu pinouts

[MattSR]

I think the RB25 PFC is a better bet for an RB20 than the GTR model, reason being that the RB20/25 share the same type of knock sensor (resonant) and the RB26 uses a flat response (non resonant) sensor.

The RB25 PFC is designed to work with the type of knock sensor that the RB20 has.

[sky30]

Had a look at the GTR pinouts, there almost identical to the RB25, only having an extra few wires connected for 2nd AFM and OXY sensor.

SO are the knock sensors on the GTRs definately different to the RB20/RB25?

[SirRacer]

hey mate heres the pinouts for r32 rb26 ecu

rb26 ecu pinouts

are you sure this is correct? these pin outs are almost the same as the rb25 sheet here (incl the injector grounds which are different)

if you check the loom on rb20det.com you will see there is a difference between the rb20/20 det and i was always under the impression the r32 rb series had the same loom

POST EDITED

Loom is correct. I have the manual for ca18,rb20de,det,rb25de,rb26dett (r32) and it looks like that changing to a rb26 power fc you also need to swap 112 & 114 pins around + the rewiring of the afms etc

Edited May 16, 2006 by SirRacer

[MattSR]

sky30 - yep.

[SirRacer]

Using an rb26dett loom on an rb25de (r33 head) the differences are

Differences

* Wastegate valve control solonoid (dont see why u wont need it anyway)

* AFM Ground (wire afm in parallel and would be fine or dejetro)

* AFM Intake sensor front (depending on what one you use you could run 2 or wire as above, i think the 26 expects a different air temp sensor though)

* Intake air temp sensor

* Throttle valve switch (dont have a clue what this is but affects r32 also)

* Fuel pump terminal control output 1

* Fuel pump terminal control output 2

* Sub electrical fan relay

r32 rb25de(Loom is basically same as rb20det, however rb20 has a fuel control terminal volt control output and FICD solenoid input signal.

rb20/25de (r32) with r33 rb25 computer

Differences

* FICD solenoid input signal (not used by r33 computer or rb20det loom)

* Swapping of injectors to suit loom 112 & 114

* Throttle valve switch (isnt on r33 loom)

r33 rb25de loom is the same as rb25det

some things we may need to clarify( i think they are for the slushbox) so power fc wont support them anyway

* Throttle sensor output signal (Says to A/T C/U)

* Throttle valve switch power supply

* Intake air output signal (Says to A/T C/U)

* Engine A/T control input signal

Edited May 17, 2006 by SirRacer

[MattSR]

RB20 Knock sensors (thanks project32)

RB26 Knock sensors

Their frequency response is as different as they look. (ie completely different)