Rb26 Pfc On A Stock Rb20

[NWR31]

yeah im still checking from others that have bought sr sensors & have been told the extra wire on them is for when used on a rb26, so was just asking again if anyone else knew anything.

yeah i looked under there but cant see em, must have to get at them underneath the car.

thanks again for your help

[Cubes]

Unsure exactly what you mean by extra wire.

The SR20 uses 2 wires just like the rb26 does.

They sensors look identical apart from their part number. Most likely just slightly different tuning of the knock sensor?

Its quite possible the sr20 might work. Possibly the 26 knock sensors are just a little more sensitive?? unsure

[grandmasterb]

Is there anyone out there that are modding the 26 PFC to suit RB20 as a straight plug and tune application and if so who are they and could i get some costs???

Cheers Ben

[esky_mad]

Member "URAS"

RB26 powerfc modded to a djetro version to run on RB20,25

$1800 Fitted i believe.

[Cubes]

Definitely good value.

Consider there's no need to purchase that Z32 afm for $300.

[grandmasterb]

Already have 26PFC and Z32 so the djetro path isn't an option lol

[NWR31]

Unsure exactly what you mean by extra wire.

The SR20 uses 2 wires just like the rb26 does.

They sensors look identical apart from their part number. Most likely just slightly different tuning of the knock sensor?

Its quite possible the sr20 might work. Possibly the 26 knock sensors are just a little more sensitive?? unsure

yeah im not sure what he meant by that either, anyway ive found the part numbers for sr/rb26 & they are different.

22060 30P00 - SR20DET knock sensor

22060 05U00 - RB26DETT knock sensor

so im not going to risk it, has to be R32gtr sensors or nothing.

wish me luck finding a cheap set lol..

cheers

[NWR31]

RB20 det sensors are different. So they simply do not work.

Its not necessary to change the sensors providing the tune is good you don't have to worry. I didn't change det sensors for quite some time.

Just keep an eye out for a pair of 26 sensors when they pop up grab.

just found out from the seller that he still uses the stock rb20 knock sensors with this rb26 fc & he says they work fine!

thats a relief

Edited August 22, 2008 by norwest_rumbler

[STATUS]

just found out from the seller that he still uses the stock rb20 knock sensors with this rb26 fc & he says they work fine!

thats a relief

yeah they all work the same, i have no issues with them, i always tune with my GIZZMO knock controller for extra sensitivity but but the stock ones work fine, in fact (for those with RB25) the numbers on the ACTUAL GTR, GTST and SR sensors are the same i know the RB20 ones are old school but they still relay the same info..... the good old RB20DE still uses the old school sensors in the R33

[White GTS-T]

paulr33 looked at doing it for a while, but it turned out that it wasn't really worth his time financially.

http://www.skylinesaustralia.com/forums/Rb...rb-t161511.html

I've looked into it a little bit.

Your looking at $1000 for a new PFC from Nengun for RB26 (On special for $900 delivered at the moment)

http://www.nengun.com/apexi/power-fc-hand-controller

$150 odd for the harness from boomslang

http://www.boomslang.us/extension.htm

Plus labor costs, if any, for someone to wire it up.

I took a print out of the RB20DET and RB26DETT ECU pinout diagrams to my local auto electrician and he said that it shouldn't be too much trouble. Listed below are the following differences between the ecu's.

RB20

RB26

ECU pinout diagrams taken from the Nissan RB workshop manual

RB20DET

Pin # 5 -Engine A/T Control Input Signal (BT1)

Pin # 6 -Blank

Pin # 14-Engine A/T Control Input Signal (BT2)

Pin # 15-Engine A/T Control Input Signal (BT3)

Pin # 25 -Blank

Pin # 34-Blank

Pin # 35-Blank

Pin # 104 -Fuel Pump Terminal Volt Control Output (FPCM )

Pin # 106 -Blank

Pin # 112-Injector No.# 4

Pin # 114- Injector No.# 6

Pin # 115- Exhaust Gas Sensor (Ground)

RB26DETT

Pin # 5 -Blank

Pin # 6 -Sub Electrical Fan Relay (engine temp SW)

Pin # 14-Blank

Pin # 15-Blank

Pin # 25 -Wastegate valve control solenoid valve

Pin # 34-Air Flow Meter Ground

Pin # 35-Air Flow Meter Intake Air Signal (Front)

Pin # 36-Intake Air Temp Sensor

Pin # 55-Exhaust Gas Sensor (rear)

Pin # 104 -Fuel Pump Terminal Volt Control Output (FPCM 1)

Pin # 106 -Fuel Pump Terminal Volt Control Output (FPCM 2)

Pin # 112- Injector No.# 6

Pin # 114-Injector No.# 4

Pin # 115-Blank

Although i have to say i didn't know Uras was converting them for $1800 installed.

Do you convert the L-Jetro afm version as well Uras?

Edited August 23, 2008 by White GTS-T

[NWR31]

thanks for confirming that URAS & excellent info there White GTS-T, im sure it will be very useful for others

cheers

[STATUS]

Although i have to say i didn't know Uras was converting them for $1800 installed.

Do you convert the L-Jetro afm version as well Uras?

im an ecu broad minded female.... will do anything.

[White GTS-T]

What do you do in regards to Pin # 36-Intake Air Temp Sensor?

[Wheezy]

im an ecu broad minded female.... will do anything.

Will work for Reach Arounds I hear

[NWR31]

ok i installed the power fc i bought from Rad32 & it all seems to work fine.

it still has his tune on it i believe, which basically is for gtr injectors & z32 afm i am still on stock for now.

my car started & ran but the idle was very low (almost stalling) & i was able to rev it up a few thousand revs.

so m just asking for verification that all is normal.

im sure it is but just want to check this is what people would expect?

also when i check the sensors/inputs on the commander is there any thing i should look for?

thanks

edit: btw i wont be driving on this ecu until i get a afm

Edited September 2, 2008 by NWR31

[Cubes]

yeah they all work the same, i have no issues with them, i always tune with my GIZZMO knock controller for extra sensitivity but but the stock ones work fine, in fact (for those with RB25) the numbers on the ACTUAL GTR, GTST and SR sensors are the same i know the RB20 ones are old school but they still relay the same info..... the good old RB20DE still uses the old school sensors in the R33

Hey Buddy..

Double check that one. The GTR knock sensors are definitely different to the rb20/25 knock sensors.

They work off the same principle but the voltage output is different resulting in the pfc's interpretation being off.

Get a multimeter on to them you'll see what I mean.

I've seen the same thing on the dyno with multiple R33's and R32's also when fitting up the GTR pfc.

Drop the RB26 knock sensors on and bingo a normal knock readout.

NWR31.. You'll see what I mean, the knock readout with the gtr pfc and rb20/25 knock sensors is not worth a pinch of shiet.

The part number between the sr20 and rb26 knock sensors are different. By all means give them a go if you have no luck sourcing 26 ones.

I'm surprised it runs with the z32 and gtr injector tune on your setup.

[pullmeonr32]

Hi Guys, i know this is an old thread but im trying to do this to my car but getting confused with regards to the wires i need to swap over?

Can anyone shine some light on this?

Thanks

[pullmeonr32]

Any help would be very greatful.

Thanks

[scotty nm35]

What is so hard to work out? Tim laid it out for you on a platter didn't he?

Quote.

ECU pinout diagrams taken from the Nissan RB workshop manual

RB20DET

Pin # 5 -Engine A/T Control Input Signal (BT1)

Pin # 6 -Blank

Pin # 14-Engine A/T Control Input Signal (BT2)

Pin # 15-Engine A/T Control Input Signal (BT3)

Pin # 25 -Blank

Pin # 34-Blank

Pin # 35-Blank

Pin # 104 -Fuel Pump Terminal Volt Control Output (FPCM )

Pin # 106 -Blank

Pin # 112-Injector No.# 4

Pin # 114- Injector No.# 6

Pin # 115- Exhaust Gas Sensor (Ground)

RB26DETT

Pin # 5 -Blank

Pin # 6 -Sub Electrical Fan Relay (engine temp SW)

Pin # 14-Blank

Pin # 15-Blank

Pin # 25 -Wastegate valve control solenoid valve

Pin # 34-Air Flow Meter Ground

Pin # 35-Air Flow Meter Intake Air Signal (Front)

Pin # 36-Intake Air Temp Sensor

Pin # 55-Exhaust Gas Sensor (rear)

Pin # 104 -Fuel Pump Terminal Volt Control Output (FPCM 1)

Pin # 106 -Fuel Pump Terminal Volt Control Output (FPCM 2)

Pin # 112- Injector No.# 6

Pin # 114-Injector No.# 4

Pin # 115-Blank

[Ben C34]

Its laid out on the platter, but still needs spooning in