Rb26 Apexi Pfc On Rb20 - How To Go About It?

[jaik]

Gday, Im looking for an ECU for my taxi and I think my best bet is to go a RB26 Power FC. But Im unsure - and Im all threaded out (Ive read tonnes!). Here are my car specs

RB20DET Standard Internals & Standard AFM

HKS GT2835 48T on Highmount Manifold, HKS 50mm Ext Gate w/ 1bar spring

3" Turbo Back Exhaust

GTR Intercooler

GTR Coil Pack Loom + GTR Splitfire Coils

GTR Intercooler

I have some HKS 264 Cams and HKS cam gears ready to go in and also a set of GTR injectors.

Is my best bet to get the 26 PFC instead of buying the AP engineering model?

As the RB20 and RB26 have different impedence injectors, am I correct in assuming that if I install the 26 ECU I wont need to install the resistor pack? Or are the ECUs the same impedence but its simply the injectors that are different impedence?

Has anyone wired up a 26 PFC to their 20 and got any tips? I will probably try and track down a wiring diagram to try and find the differences - but I know from Paulr33s faq that I need to parallel both secondary afms and o2 sensors.

Thanks for the advice!

JK

[NathR32]

There was a massive thread on this a while back, I'll see if I can find it.

[jaik]

Sydneykid said this once

Hi jnr32r, Power FC requires the standard impedance injectors, which on an

R32 GTST RB20DET are 12-14 ohms (generally called high impedance). R32 GTR

RB26DETT have low impedance injectors, around 3-5 ohms. If you use low

impedance injectors then the PFC will get too much current drain and

overheat.

JK

[NathR32]

http://www.skylinesaustralia.com/forums/in...109588&st=0

[carl h]

fitting the rb25det pfc is much easier, the rb20 lacks some of the sensors that the rb26 has.

source a rb25pfc have the car towed to a shop that can tune it with the software and upload the rb20 basemaps to the rb25pfc and go from there.

[jaik]

This is the conclusion Ive also come up with now. I think upgrading to a Z32 AFM at the same time might be the way to go aswell.

Thanks guys!

JK

[paulr33]

its covered in the powerfc faq (in my sig)