Jump to content
SAU Community

Recommended Posts

Hey,

Since the Z32 VG30DETT ECU is remappable and has support for VCT I thought it would be a good choice for running my RB25/30 hybrid.

Providing I use the same size injectors as the factory VG30, keep the compression/boost levels similar, and use the Z32 AFM the factory ecu should be able to run it without a retune?

I do plan to make a fair bit of power out of the engine, but I figure if the VG30 ecu can run it with basic mods it would save me having to get the initial tune, and the cost of an aftermarket ecu.

Then after the engine has run in, I can upgrade the injectors/afm etc and get the ECU remapped to suit.

Edited by daisu
Link to comment
https://www.sau.com.au/forums/topic/229270-factory-ecu-for-rb30det/
Share on other sites

depending on what head your using, use either the RB20 or RB26 loom/ecu. these are both available with nistune daughter boards (real time tuning) and will make everything straight plug in (if your using an R33 RB25 head, i THINK the RB20 loom can be modified to suit, not sure on this though)

depending on what head your using, use either the RB20 or RB26 loom/ecu. these are both available with nistune daughter boards (real time tuning) and will make everything straight plug in (if your using an R33 RB25 head, i THINK the RB20 loom can be modified to suit, not sure on this though)

Need to add the VCT wiring to the rb20/26 loom, and a dropping resistor, depending on the injectors. Other than that you just need to swap a few pins around on the ecu. I have a pdf of the changes somewhere, ill have a look

Well it's going in a cefiro, and the RB20 and 26 ECU's don't support VCT, or is that something that is fixed when the nistune daughter board is installed.

Plan was to either use an RB25 loom (to suit the head) and modify it to suit the cefiro and the Z32 ECU

Or, use the loom that's in the car at the moment (R32 RB20 loom) and modify that to suit the RB25 head, and the Z32 ECU

nistune doesnt support R33 and R34, maybe because of the VCT? are you going with bigger cams and/or adjustable gears? i've seen a few builds that had no real benefit from VCT, one even had stock cams, just adjustable wheels. dont quote me on that, do some more research. but if you can afford to lose it, would make it simpler, just use the R32 loom with RB20 ECU

Edited by VB-

I will probably upgrade the cams, from what I've read you can upgrade to 256 on the inlet camshaft and still retain VCT. Then I'll probably put adjustable gear on the exhaust side (also upgraded camshaft).

The Z32 ecu certainly seems like a good option. The aftermarket ECU I was planning on using hasn't been released yet, but it has all of the features I want for a price similar to a standard ecu with the nisstune add on.

I guess I'll leave the ECU/wiring until after the engine is ready to go in, then if the ecu I want still isn't available then I will go the Z32 + nisstune option.

Does the cefiro use the same ecu as r32 rb20? If so it wouldn't be too diificult to just make the wiring changes to suit the z32 ecu, then wire

the vct soleniod seprately.

Chucked together a quick txt file with some wiring changes it may help :blink:

Edited by Mr Jollwah

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


  • Similar Content

  • Latest Posts

    • For these last 7 years of ownership, I've always had to use a small scissor jack under one of the front tow hooks to raise the front just enough so my low-profile jack fits under to reach my subframe jack point. I'm beginning to get annoyed of always having to do this. Are there any lower low-profile jacks that fit under the gtr lip on a dropped car?
    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
×
×
  • Create New...