R32 Ap Engineering Powerfc Pics

[Cubes]

"Rich and Retard" is simply the higher air flow/load cells having no ignition timing in them, and the fuel cells at this load are rich.

That is why it cuts, no timing in those load cells.

If you could remap the ecu to put some extra ignition timing in those load cells, you wouldn't have a rich and retard situation.

The TI monitor is more then likely a signal for a trip computer to calculate show current fuel usage.

Also the lack of the throttle switch input, will not matter as the RB25 PowerFC uses the throttle position sensor, not switch. (So it won't matter that its not there.)

From what you have found Cubes, all you have to do is reverse pins 112 & 114 and cut 57 to be safe. (I doubt this pin is connected in the PowerFC though?)

Interesting, well as soon as I find out if my pfc is fried or not I'll throw an rb25 pfc in to it.

Seems almost too easy.

kwazza11, Can I ask you if you did the install your self or had some one else do it. I know you did said 'you' switched the two inj. outputs on the loom. Just to double check it was indeed you who did the work as then I know your not leaving something out.

[Cubes]

For those interested (PaulR33 possibly in his pfc faq thingo majig) I've attached a little animated gif of the differences between the r33 and r32 ecu's..

[paulr33]

good luck let us know how you go.

[Cubes]

I had a look at Bl4ck32's PFC this morning, it too has the little cut disabling ecu pin 57.

So it appears AP Engineering do indeed use one of the rb25 revisions (possibly an early one as the ap engineering pfc uses the early hand controllers) swap the two injector outputs and disable the pin 57.

[kwazza11]

Cubes, yep i installed it myself and all i did was swap the two injector wires around, the throttle switch is only used for kick-down on autos and the exhaust temp signal (57) i assume is used for the exhaust temp light to indicate a blocked cat, thats been disconnected. everything else has been explained, Ti monitor for trip computer, boost control etc.

was a massively simple exercise, plugged it in, drove it to the tuner's workshop, got it tuned, drive away!

[Cubes]

Good stuff.

My pfc is in getting looked at so I will know within the next couple of days if its frigged or not.

Fingers crossed the ignitor is still ok.

[browny]

the throttle switch is only used for kick-down on autos

Actually I think pin 54 is a throttle closed switch which the RB20 ECU uses to go into idle mode. The throttle sensor box thingy also contains a WOT (probably closer to 75%) switch that from what I can remember is connected to the auto trans and not used by the ecu.

However if the RB25 ecu doesn't need that exact throttle closed signal to determine when it should be idling, then I can't see a problem leaving it disconnected.

[Cubes]

YEAAAAA HAAAAAA!!

$160 later and Force electronics fixed the PFC.

I've just tested it in the car now to head down and pay them.

[paulr33]

haha top stuff

let us know what they did to fix it

[Cubes]

Will do buddy.

[Bl4cK32]

now dont go and stuff it fer good this time...the mrs wont be too happy

[Chris32]

Good to hear Joel, big relief!

[Cubes]

The mosfets were fine however the capacitors and resistors had been fried, I did pick some of the tinny little resistors that can hardly been seen were replaced.

All capacitors were replaced as well as resistors. He said I was 'very' lucky.

A few pics of before and after.

[rob82]

The mosfets were fine however the capacitors and resistors had been fried, I did pick some of the tinny little resistors that can hardly been seen were replaced.

All capacitors were replaced as well as resistors. He said I was 'very' lucky.

A few pics of before and after.

Anybody know what the external memory expansion socket/pins are for?

[Cubes]

The new pfc's apparently don't have that.

Maybe Djetro or PFC Pro?

Some one open up their Djectro or Pro pfc.

[paulr33]

the newer powefcs have a white connector on the board for rom flash upgrades. no idea what the memory expansion is for.

i would expect djetro and pro versions have simply different firmware as they are just code logic changes, wouldnt think it would need more memory or extra chips? seems logical anyway

tops that you got it fixed, is the tune still present ?

damn lucky and cheap to fix might i add, good stuff

[Cubes]

Yes everything is still there.

[C_DawG]

The mosfets were fine however the capacitors and resistors had been fried

This is quite strange actually, the only reason the resistors would blow is if the gate of the FET went short circuit, which is rare is the gate input of a FET is capacitive.

[Cubes]

Reverse polarity...

How would this affect what you are stating above..

I must admit when I asked how were the mosfets he did say 'suprisingly fine'.

[C_DawG]

Reverse polarity...

How would this affect what you are stating above..

I must admit when I asked how were the mosfets he did say 'suprisingly fine'.

I dont think reverse polarity would be the issue, im not really familiar with the story of yours failing.

Vibration or excessive PCB flexing tend to be a big cause of failures in things like car amps.