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Rb20 Ecu For Rb25?

2gceffy

By 2gceffy,
in Engines & Forced Induction

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2gceffy Rising Star

2gceffy

Posted
Posted (edited)

hey guys i did a search and didnt find anything, i never seen to find anything :mellow: but everyone else does so help me if need be

anyways iv heard bout some rb25det running off re-mapped rb20 ecu's..

im assuming it wouldnt be a direct swap of course and some changes would need to be made, but what changes exactly? anyone here done it? how hard?

i know i should just source a PFC or something similar and i wont get as good of result maybe, but want to not take the sh*t option but something less costly or different..

wish i went the rb20 for my ceffy due to easy tuning :)

i know there is alot of people who are knowledgeable so please dont flame me ahaha

im just stuck with what i want to do with my car and some opinions about this would be great

thanks

iv just read a few threads and it says you can re-map r33 ecu but cost more, but no one mention's how much more..

where around the brisbane area could i go with either r32 or 300zx ecu and say make it work???

Edited by 2gceffy
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https://www.sau.com.au/forums/topic/155917-rb20-ecu-for-rb25/
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paulr33 Grand Master

paulr33

Posted
Posted

which ever option you choose, you need VCT support if retaining the factory NVCS system. otherwise it runs like a pig with vct off in the factory cams & setup. ive seen a quote of about $1000 to remap an r33 ecu

z32 and r32 should work, but agian youll need to get vct somehow

2gceffy Rising Star

2gceffy

Posted
  • Author
Posted (edited)
My r32 has a rb25det in it. But I think it was an rb25de, turboed. (conversion was done in japan) It is running on a stock r32 ecu fine (chipped).

If you need any info or pics, happy to help as much as I can.

hey mate can i get all the info you have on it !!

(manwhore) where bouts are you getting your re-map done? if i could get a re-map for $350 id prob go buy new turbo and injectors right now ahaha

(paulr33) so id have to find an ecu that runs the vct? do any other nissans run it?

non turbo rb25 ecu run the same format or ecu as turbo?

thanks heaps guys this info is great

Edited by 2gceffy
TSL Enthusiast

TSL

Posted
Posted

Yeah you can run an r33 rb25 with an r32 rb20 ecu with rb25 maps programmed in but you do lose vct.

Using a z32 ecu maintains the vct control but needs some re-wiring to run the engine. Mainly rewiring the injector and coil outputs to suit the different firing order.

R33 ecu's are a pain to remap as the memory is stored inside the main processor. These chips can be replaced but they are much more expensive than the common eproms used in r32 ecu's etc. The chips are also one write only so if the tune is not spot on the first time you have to throw away the chip and start again. There are daughterboards available from japan to make the programming slightly easier but they are also expensive.

The beauty of remapping most nissan ecu's is that they are relatively easy and cheap to modify. Unfortunately with the r33 there is a lot of extra messing around and time involved which makes it not such good value.

2gceffy Rising Star

2gceffy

Posted
  • Author
Posted (edited)

who would i take it too (z32) ecu to get those modifications done? any knowledgable tuner be able to perform this?

id get onto dr drift if he was in my state, planning money and time on him bein up here for a day or too will be difficult..

iv been looking into devices to control vct, would VTEC controller work?

if not could anyone reccomend something that will do the job

thanks

Edited by 2gceffy
TSL Enthusiast

TSL

Posted
Posted

Anyone with a soldering iron, a copy of both the R33 and Z32 ecu pinouts and some common sense should be able to do the wiring. Sam (Dr Drift) or myself could provide you with an eprom to get it running. Not sure who in brisbane could dyno tune the stock ecu in realtime.

Well there are external VCT controllers available. I think HKS makes one. Not sure about the vtec thing.

WazR32GTSt Grand Master

WazR32GTSt

Posted
Posted
Not sure who in brisbane could dyno tune the stock ecu in realtime.

The team at Mercury Motorsport can... they purchased Dr Drift's software and he trained them how to use it :laugh:

http://www.mercurymotorsport.com.au/produc...nedit/index.htm

i've had my car tuned there with their "nissan edit" and it drives nicely

bretto Proficient

bretto

Posted
Posted

Ive got a R32 with an rb25 in it that is running a 20 ecu. When i first got the car it was running a S1 r33 engine with hks cams therefore the vct was removed, ive just done a swap for a neo6 running the vct and the guy that wired it in has got the vct to run using the chipped ecu. Dave from Charlies at wooloongabba (brisbane) wired that bit in and got an extra 15 rwkw once the vct was wired in and working.

bretto Proficient

bretto

Posted
Posted (edited)

its just the neo block, we basically just swapped everything onto the block that was on the rb25, and the vct was wired into the fuse box into the ignition. works a treat.

*disclaimer* i dont know alot about this sorta tehnical stuff but this is basically how my mate has explained they got it to work :ninja:

Edited by bretto
tuitahi Community Regular

tuitahi

Posted
Posted

I sent TSL a pm last night about getting this done, but have been researching while waiting for a reply.

From what I can gather on the pinouts I've found so far you'd just need to swap cylinders 5 -2 & 6-4 on both the spark and injection. Is that right?

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