Jump to content
SAU Community

Rb20 Ecu On Rb25

entelijint

By entelijint,
in Engines & Forced Induction

 Share

Recommended Posts

entelijint Contributor

entelijint

Posted
Posted

So I tried searching and turned up nothing.

I'm in the middle of my RB25 swap/build and am wondering if it's possible to use the RB20DET ECU with a series 2 RB25DET engine. the loom that came with the RB25 had the ecu connector cut off (they cut it at the firewall) and was wondering if I could just splice the rb20 end onto the rb25 without worrying much. I have both the rb20 and rb25 ecu, the pin-out on the rb25 one having 2 extra pins though.

I'll be using a MAP-ECU2 with this car... 550cc injectors, larger turbo, no maf, modified fuel pressure... so the tune will be completely custom.

anyways, long and short of it, can I get away with using the rb20 ecu with my rb25? if anybody knows, please explain what the issues would be if there are any.

Link to comment
https://www.sau.com.au/forums/topic/166122-rb20-ecu-on-rb25/
Share on other sites
predator Grand Master

predator

Posted
Posted

There's more than just 2 pins you will need to work around if you go this route ...

Get a pinout diagram of both the RB20det and RB25DET ecu's and you will be able to work out what needs to be changed to start with. Then a lot of the sensors are different and need to be wired differently as well.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      Unpeeling the Orange

      By MBS206 · Posted

      I'm normally copping my own abuse from neglecting my daily drivers. "Those suspension bushes will last a bit more", "Don't worry about the oil leak, just keep topping it up". The project cars I'm always doing things slowly on them as I'm wanting them to be done better, and neater, and nicer. Luckily I don't have to deal with 18 year old Matt's "Learning to wire" stuff in the project cars. And there's only one piece of wiring I'm displeased about in the Landcruiser, and it's about to be cut out... However, the box loads of parts that have been going through this place lately for the Landcruiser... Brake pads Brake Rotors Full handbrake overhaul Wheel Bearings Seals Swivel hubs Steering Boxes Half the suspension joints Shocks Air bags (Ones to go in the rear springs for towing) Water pump Timing kit Lower timing case Harmonic Balancer Radiator Lots of other little seals and shits Gas struts for the bonnet New power window switches And god knows what else I've forgotten... Ha ha ha I have my fingers crossed the pinion seals don't start leaking on the diffs, that the transfer case doesn't leak, and the gearbox input shaft doesn't leak, nor the rear main seal. As they're about the only seals I haven't replaced in the driveline! I'm seriously eyeing off buying new caliper rebuild kits front and rear brake calipers... I'll probably recheck all the valve clearances soon too, and hopefully, it should be all good and sweet to haul some long distance trips again!
    • GTSBoy
      Unpeeling the Orange

      By GTSBoy · Posted

      Every time I pull my 3x gauges out of the console and see the crack-addict way that I did the wiring, and I just can't bring myself to tear it all apart and "make it nice", because it is currently working. In fact, the last time I was in there I probably made it worse.
    • Kinkstaah
      Unpeeling the Orange

      By Kinkstaah · Posted

      The best part is when you own the car long enough that you look back and find your OWN ham fisted amateur shit!
    • MBS206
      Unpeeling the Orange

      By MBS206 · Posted

      The annoying part about neglect, is when you start to replace one thing, and find ten more broken things. Ham fisted monkey repairs you normally only find out about when trying to do something unrelated! Ha ha   Neglect you can kind of anticipate the huge costs to fix it all. Ham fistedness is normally a shock the first time your work on a new old car, as everything "looked" good before.
    • MBS206
      What brakes on R34 GTT(Europe)

      By MBS206 · Posted

      For DBA, check out their guide table here. https://dba.com.au/wp-content/uploads/2023/01/Direct_Replacement-Guide-2021.2.pdf   Additionally they have some other guides and info on how to make sure you choose the right pad.
×
×
  • Create New...