R32 Ap Engineering Powerfc Pics

[discopotato03]

Cubes had luck been out to lunch would plan B have been an R33 PFC ?

I still don't have one or the Skyline to plug into it so maybe an R33 PFC would be the go . Actually since it will start out as a std GTST and end up with an RB26 head (not the RB20) would the R33 PFC work out cheaper ? The head obviously is GTR as is the engine harness and injectors/resistor pack and I only want to use one AFM probably Q45 . I'm not sure which set of bits to use and onlly want do it once . Also could someone please tell me if the sub harness that the engine harness plugs into for power supply is same or different between R32GTST and R32 GTR . Its the one that runs from the nearside strut tower and along the bottom of the rad support panel and up to where the boost control valve and I think ignition module is ?

Sorry to be vague but have not been close to an R32 (any) for a while . Would be good if an R33 GTS or GTR PFC saved some dough .

Cheers A .

[paulr33]

pick of the bunch seems to be RB26 as you can choose from

FC Pro

Djetro or Ljetro

and it has working airtemp support

twin or single AFM support

[RB30-POWER]

The RB26 PowerFC doesn't take advantage of the second O2 sensor on the RB26 does it?

[paulr33]

yeah it would have to, to have a working 02 closed feedback system.

under sensor SW you can see each 02 sensor

[discopotato03]

I was under the impression that the RB26's plenum mouth air temp sensor could be made to work with at least the AP R32 GTST version with a few extra wires . De Jetro of no use to me , MUST run AFM .

Thanks A .

[paulr33]

question;

the r32 ap eng version, the boost kit connector is it 3 pins or 5? looking at the pictures it appears to be 3 pins. where does the solenoid get switched power from then ?

[paulr33]

sydneykid has done this in his r32, connected up the airtemp sensor to an r32 powerfc. although i am notsure if its an r32 ap engineering or an rb26 version.

do ap eng have AIRT under sensor sw ?

the sensor would need to be present for it to work

[Cubes]

Cubes had luck been out to lunch would plan B have been an R33 PFC ?

I still don't have one or the Skyline to plug into it so maybe an R33 PFC would be the go . Actually since it will start out as a std GTST and end up with an RB26 head (not the RB20) would the R33 PFC work out cheaper ? The head obviously is GTR as is the engine harness and injectors/resistor pack and I only want to use one AFM probably Q45 . I'm not sure which set of bits to use and onlly want do it once . Also could someone please tell me if the sub harness that the engine harness plugs into for power supply is same or different between R32GTST and R32 GTR . Its the one that runs from the nearside strut tower and along the bottom of the rad support panel and up to where the boost control valve and I think ignition module is ?

Sorry to be vague but have not been close to an R32 (any) for a while . Would be good if an R33 GTS or GTR PFC saved some dough .

Cheers A .

Yes the R33 PFC was all lined up ready to go should I have been out of luck.

Others have had the r33 pfc running their r32 and by looking at the pin outs I am 100% certian the R33 pfc is the only way to go if you feel comfortable with a couple of little modifications.

If you decide to go the RB26 pfc in order to utilize the air inlet temp sensor I don't believe its as simply as splitting a single afm's voltage output and feed the two in to the pfc; 2v worth of air through a single afm is less air than 2v worth of air through 2 afm's. I would think a rework of the airflow curve would be in order to get it to run nice, basically it won't just run but tuning if you have access to a datalogit won't be a problem.

I had considered the rb26 pfc route but there are couple of differences with regards to fuel pump volt feed and obviously the afm, I didn't want to push my luck.

Paul.. The R32 PFC's don't have AIT under the sensor screen, its blanked out like yours.

[paulr33]

the PFC's internal method working out engine load is two average the two together and perform the calc against a fixed constant and look it up off the ramp. so if you have two afms are 3v or one at 3v its the same

[Roy]

Before i bought my AP PFc i was lookign at buying an R33 GTST Pfc Pro as i wanted some of the additional features...and teh research i did looed as though the R33 Pfc thing would work. But i never tried it because as i was about to buy one i butchered my engine and didnt want to take any more risks.

So 2 years later, im ready to try to wire an air temp sensor into my AP Pfc...but heave heard a few ppl have cooked them trying. Can i ask if thats what you did to scare your PFc?

If the R33 GTST PFc Pro is a go for a replacement, it still has a few features i would like

[paulr33]

the only way i could see the airtemp wire in method working is if you have AIRT under sensor SW and its display a voltage. If the sensor is not present then i dont see how (logic would prevail) it work by connecting it to the right wire on the loom. sydneykid metioned he did it but i suspect he used an rb26 ecu and it would have AIRT under sensor SW

[paulr33]

sorry roy, yes i fried mine by trying to hook up the airtemp sensor.

r33 gtst does not have the sensor and its not under SENSOR SW / CHECK

[Al]

Only read the first page so don't shoot me if it has already been mentioned

Paul you have a Series 2 motor, this Pfc may be similar to the one used for a R33 S1 motor.

[paulr33]

the powerfc is the same for series 1 and series 2 (always has been)

but it does appear to be an older version powerFC

its likely the rb20 ap eng is from some other wierd variant

if someone with RB25DET 2.20, 2.3, 4.35 could open up their FC and take a picture that would confirm where the Ap eng rb20 version is coming from

although it should be noted that you can still buy new ap eng rb20 powerfcs, so i wonder what a recently purchased one comes from, like one in the last 2 years as the 78F3 cpu used (well in the R33 GTST) is no longer available so they had to switch cpu types.

[SirRacer]

kwazza11,

So that is 100% all you did? Simply swap the inj. outputs?

I've attached an excel file that depicts the two pinouts, flick between the two tabs to see the highlighted differences. There are a few, one which is of concern is the rb25 lacks the rb20's throttle valve switch (pin 54) and in place of the rb20's throttle valve power (pin 57) it has the exhaust temp sensor signal.

On the RB25's ecu pin 17 Injection pulse TI monitor, I wonder if this is the R33's Rich and retard mechanism, it see's x inj. duty cycle then does its mental power dips from there on wards. It would be interestering if the rb25 pfc has this internally connected, if not then I would suggest it does exactly what I stated.

I'll throw the GTR pin out in there now.

its been posted up here a few times that all you need to do to make an rb25det one work on an rb20det is swap the 2 injector grounds.

ive got the pinouts here and have looked at all 3 , rb20,25,26 and its the easiest to do. from memory the 25standard ecu had a pin for a boost control however i dont see why you would need it anyone running aftermarket ecu

[paulr33]

what about the ignition firing? shouldnt you change that also?

the boost pin or pin #25 is used for solenoid power for the boost kit, powerfcs with the 3 pin boost kit plug reuse this wire for switched power to the solenoid (powerfc turns it on/off to control duty).

boost kits with 5 pin plugs runs their own ground and power for the solenoid

[SirRacer]

ill go home and check my diagrams but they are from the nissan manual

the rb26 has different knock sensors as well. dont know whether that will make a difference though?

[discopotato03]

Gary (Sk) , what are your opinions of the AP PFC and this air temp probe business ?

Cheers A .

[BlueRB240]

A little off topic but dose anyone have the AP home page? the old one I had saved dose work anymore. I wanted to get the list of injector lag times off the sight.

[The Mafia]

I wonder if they do powerfc upgrades...you know...launch control etc..