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32 Gts4 Running An Rb25det. Ecu Dilema :(

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hey guys,

like alot of people, im in the middle of a conversion (R32 GTS4; RB20det to RB25det) and finding out its alot more costly than first expected :)

So im begining to sell some of the mods and returning to stock, so i can afford to get it running!

anyway, my question;

I will be selling my wolf v400 ecu, and thinking of replacing it with an rb20det ecu (remapped) and running an rb25det loom.

So im wondering if there is a difference between the rb20det ECU from a GTSt and an rb20det ECU from a GTS4???

cheers :(

Edited by zertek
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Hey dude

Same ECU on both cars

The 4wd controller for the GTS4 is on the right hand side kick panel i think?

well at least it is on mine :)

so you can use the ECU from a GTS-t in place of the stock passenger side one

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no, diferant ecu wiring. mainly if its a s2 25 the coil wring and airflow meter wiring is differant.

also on a 32 the main power is gotton from the pasanger inner gaurd area. under the airfilter where on a 33 its under the aircon fan area near the ecu.

also regardless of 33 or wolf you will have to feed the tps signal wire to the attessa computer.

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You've already paid for the Wolf. You need the ECU that interfaces to the ATTESSA computer. If you only have a basic V400, see if you can swap it for a GT-R plug'n'play model.

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oh yeah I didn't see the 25det part :D

you can rewire the rb20 ecu to see it, but I'm not too sure how to get the VVT working, I know there is a way, also if you've got a Wolf, why are you worrying about an rb20 ecu?

why not just use that, the 4wd ATTESSA controller should be seperate and not connected to the main ECU?

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  • 2 weeks later...

Ok so now my understanding is that the computer on the right kick panel is the controller of the ATTESSA.

Id be happy to keep using the WOLF 3D ECU but im pretty sure that an rb25det engine loom wouldnt connect up in place of the old rb20det engine loom?

Also have an understanding from BLIND ELK (very helpful champ) that i need to get some sort of a new auxilary relay for the wolf to run the VVT?

This is confusing. im contemplating just selling the wolf and buying something that i know i can just plug straight in and run my 25.

Edited by zertek
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diferant ecu wiring. mainly if its a s2 25 the coil wring and airflow meter wiring is differant.

well if i was to use the wolf, it is map sensored so that should rule out any AFM wiring, not sure about the coil wiring though...

I cant exactly take my car to a tuner an have them take a look at it all, that would be too hard with all the peices the car is in at the moment. :laugh:

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The attessa controller should be under the parcel shelf in the boot, left hand side, right hand side is hicas and power steering module.

Left hand (passenger) kick panel is the engine ecu module, Right hand side (drivers) kick panel is the automatic control module. (if it was previously an auto..)


Edited by heller44
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