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R34 rb20de neo ecu vs 25det neo ecu

Aiden.owop
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Aiden.owop Newbie

Aiden.owop

Posted
Posted

Hey guys, Im just wanting a hopefully simple answer.

I'm just wondering if the rb20de neo ecus/ looms are the same as the rb25det neo engines. 

I'm doing a plus-t on my 20de neo and before you all say it's not worth it I know I have a s1 25det I'll use in either this or the drift car which ever blows up first😂.

Main thing I'm wanting to know is can I get a link g4 plug and play for a R34 25det and use the loom or ecu or am I just better off getting g4x and make/ get my loom made. 

I've seen multiple de neo plus t's make good reliable power eg: one in a mates drift car making 270kw on 22psi for 6 years, even saw 13500rpm briefly back when links limiters liked to disappear and somehow survived. 

Plan is to run a 25det turbo stock manifold fmic not sure on intake yet but will probably go front facing or could just put the standard 25det one if it fit and run 14psi with larger cc injectors and all the usual crap.

Thanks in advance for any replies

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https://www.sau.com.au/forums/topic/484091-r34-rb20de-neo-ecu-vs-25det-neo-ecu/
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GTSBoy Grand Master

GTSBoy

Posted
Posted
3 hours ago, Aiden.owop said:

even saw 13500rpm

Didn't happen. Would have been bullshit signal from CAS interpreted by ECU as much more revs than was actually happening. 13500 is just so totally implausible as to be beneath consideration.

As to the ECU....not sure. There are definitely ECU driven devices and sensors on the turbo that are not on the 20. Traction control and its position sensor, boost sensor (yes, for the ECU, not for the dash) and teh boost control solenoid are the obvious ones. So it is possible that the ECU plug is the same plug, but it is also possible that it is not. And if it is the same, there is no guarantee that the pin assignments for all the other stuff are the same.

'Twere I you, I would get the wiring diagrams for them both and just compare. The manuals are out there.

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WMDC35 Experienced

WMDC35

Posted
Posted

I haven't tried it this way but I''m guessing it would work, as GTSBoy says there are extra sensors but with the link I'd guess once again lol that you'd just have to wire in the boost control solenoid unless just running gate pressure, the boost sensor & traction probably shouldn't be an issue with the link.

Have you checked the Link site? See below lol

Suitable applications: 

RB20DE NEO, RB25DE NEO and RB25DET NEO in R34 Skylines

RB20DE NEO, RB25DE NEO and RB25DET NEO in C35 Laurels 

RB20DE NEO, RB25DE NEO and RB25DET NEO in Nissan Stageas

- Plus, non neo motors in Stageas 

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Aiden.owop Newbie

Aiden.owop

Posted
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Posted

Thanks for the reply's guys, I did look on links website but for some reason didn't see the "suitable applications"

I'm not too worried about everything working ie dash but would be nice, the boost sensors and controller will all be done by the link as they have a 4 bar map sensor and multiple extra ports for things like boost controllers & iat sensor. The cars factory manual and doesn't have tcs and abs runs on its own modual. I'll come back and update you guys on how I get on for anyone trying to do this in the future.

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