armbrusb Posted March 14, 2006 Share Posted March 14, 2006 Will an RB20DET Power FC work on an RB26DETT or will a Power FC for an RB26DETT work on an RB20DET? My guess is that it wouldn't - but does anyone know for sure? Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/ Share on other sites More sharing options...
Evan_R33 Posted March 14, 2006 Share Posted March 14, 2006 Will an RB20DET Power FC work on an RB26DETT or will a Power FC for an RB26DETT work on an RB20DET?My guess is that it wouldn't - but does anyone know for sure? i am gonna say a conclusive no. remember for starters that the rb26dett has things like an inlet air temp sensor that the '20 doesn't then take into consideration even the base maps installed inside the power fc. i have got fc edit and there is screens avail for the 26 that the 20 does not have. i dont reckon i can be done Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2019731 Share on other sites More sharing options...
paulr33 Posted March 14, 2006 Share Posted March 14, 2006 curious as to why you would want to? altho the rb20det version costs more as its an ap engineering model. i have seen one person who was sure they were going to remap (somehow) their rb25det powerfc to work on the rb20 but i never saw how/what they did. if someone can tell me i can add it to the powerfc faq so its knowledge for all Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2019825 Share on other sites More sharing options...
N I B Posted March 14, 2006 Share Posted March 14, 2006 A GTR PFC ECU is easy on an RB20. Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020011 Share on other sites More sharing options...
yogi000 Posted March 14, 2006 Share Posted March 14, 2006 i've read on the fast forums a while back when Jim from CRD posted on there saying that he was had success getting a r33 power fc working. Dunno if it true but just thought i'd share that. Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020045 Share on other sites More sharing options...
Cubes Posted March 14, 2006 Share Posted March 14, 2006 The air inlet temp sensor is easy to get around providing you have access to a datalogit or even better why not run the temp sensor. The only real issue is the use of one afm when the ecu expects a signal from 2. Easy to get around when you think about it. Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020059 Share on other sites More sharing options...
gt-t_r34 Posted March 14, 2006 Share Posted March 14, 2006 in HPI magazine they said you can use r33 PFC's on r32's (GTSt of course) Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020062 Share on other sites More sharing options...
Denver Posted March 14, 2006 Share Posted March 14, 2006 you can indeed use an rb25 ecu on an rb20, pinouts on the ecu are identical, difference being that the 25 ecu has an extra wire for the VVT solenoid, which doesn't exist in the rb20 loom Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020212 Share on other sites More sharing options...
gt-t_r34 Posted March 14, 2006 Share Posted March 14, 2006 so you just take that wire out like when you put the FC's into 200sx's how you have to take out wires because there different to silvia's?? You wouldnt be able to drive the car if you put the r33 pfc in although because the r33 tune would be way off?? is this right?? cheers simon Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020368 Share on other sites More sharing options...
Cubes Posted March 14, 2006 Share Posted March 14, 2006 Pinouts are different accoding to the engine manuals I have. :S Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020403 Share on other sites More sharing options...
discopotato03 Posted March 14, 2006 Share Posted March 14, 2006 (edited) So ah how do we get the GTR PFC to work in a single turbo R32 ie 26 head on RB30 . I don't feel real good about two parallel AFM's in front of the turbo . If one was to get more air ie better duct filter etc the others half of the engine would run lean right ? Also isn't the R32GTST PFC a modified 32/33 GTR PFC ? Cheers A . Edited March 14, 2006 by discopotato03 Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020499 Share on other sites More sharing options...
paulr33 Posted March 14, 2006 Share Posted March 14, 2006 well if you were using the rb26 powerfc and used the rb26 head on the rb30 bottom end then it should be a straight plug in and start, providing the loom matches whatever rb26 verison you have, ie r32 loom with bnr32 powerfc. you could use the apexi safc to split the afm signal's into 1 or split 1 into 2 so you can support either way. the rb26 powerfc expect's two afm signals, so using the safc you could split 1 single afm into two, ie an upstream q45 for open mouthed style or even a q45 in front of the compressor intake (filtered style). Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020522 Share on other sites More sharing options...
armbrusb Posted March 14, 2006 Author Share Posted March 14, 2006 The reason for me doing this would be one of flexibility. I currently have an R32GTS4 (RB20DET). A PFC would be a cool thing to have now, and it may offer me some flexibility in the future if I go with an RB30DET in my current car or buy an R32 GTR. Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020565 Share on other sites More sharing options...
Sydneykid Posted March 15, 2006 Share Posted March 15, 2006 The reason for me doing this would be one of flexibility. I currently have an R32GTS4 (RB20DET). A PFC would be a cool thing to have now, and it may offer me some flexibility in the future if I go with an RB30DET in my current car or buy an R32 GTR. I have done the reverse, using an RB20DET PowerFC to run an RB30/26. Use one AFM and parrallel up the ECU inputs. The PFC will see 2 X AFMs both reading exactly the same. Do the same for the lambda sensors. Use a standard RB26 air temp sensor mounted in the intercooler pipework before the throttle body. The speedo readings via the commander/datalogit will be inaccurate due to the different diff ratios. From memory all of the other sensors are the same. If you use RB26 standard injectors it will start and run straight up. cheers Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020630 Share on other sites More sharing options...
Beer Baron Posted March 15, 2006 Share Posted March 15, 2006 So ah how do we get the GTR PFC to work in a single turbo R32 ie 26 head on RB30 . I don't feel real good about two parallel AFM's in front of the turbo . If one was to get more air ie better duct filter etc the others half of the engine would run lean right ? two afms, feed into one turbo, which then feed through one inlet tract to the engine. or, 2 afms feed into 2 turbos which then feed into one inlet tract to the engine. there is no difference in the end result here. it's not like 1 afm is the signal for cylinders 1-3 and the other is 4-6. i'm sure there will be a difference in the reading of each afm, but they are just adding the two figures together to get total airflow. it's not running half the engine of each afm, that would be crazy. Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020647 Share on other sites More sharing options...
paulr33 Posted March 15, 2006 Share Posted March 15, 2006 very cool sk, thanks for posting. will add to the faq. i didnt even think it was possible Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020648 Share on other sites More sharing options...
carl h Posted March 15, 2006 Share Posted March 15, 2006 you can run a rb25pfc on a rb20 IF you swap injector triggers for clys 5 and 6 and run larger than stock (rb20 stock) injectors. tested it out on a buddies car and will prove difinitvely when i get my car back together. Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020683 Share on other sites More sharing options...
Gts-t Posted March 15, 2006 Share Posted March 15, 2006 A GTR PFC ECU is easy on an RB20. Great info there wanker, you may as well have not posted. If it is so easy why not elaborate..... Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020686 Share on other sites More sharing options...
MattSR Posted March 15, 2006 Share Posted March 15, 2006 you can run a rb25pfc on a rb20 IF you swap injector triggers for clys 5 and 6 and run larger than stock (rb20 stock) injectors.tested it out on a buddies car and will prove difinitvely when i get my car back together. This sounds like great info here - saves having to purchase the more expensive AP Engineering version Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020737 Share on other sites More sharing options...
paulr33 Posted March 15, 2006 Share Posted March 15, 2006 thanks guys will add info on running rb20 powerfc on rb26 head will add info on running rb25 powerfc on rb20 head to the powerfc faq. good stuff Link to comment https://www.sau.com.au/forums/topic/109588-using-an-rb26dett-power-fc-on-an-rb20det/#findComment-2020817 Share on other sites More sharing options...
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