Jump to content
SAU Community

Recommended Posts

Hey I'm doing RB25 S2 swap in my R32

I'm keeping the R32 wiring harness and the TPS/throttle valve swith connectors are differents on the s2 engine.

Can anybody give me wiring colors or TPS and throttle valve pinout??

post-71218-0-61886900-1335400115_thumb.jpg

post-71218-0-60072200-1335400272_thumb.jpg

Edited by lowexr
  • 6 months later...

Finally found some info, been searching for awhile now!

I'm using a RB20 loom and RB20 ECU (Nistune) and swapping in the S2 RB25.

Tonight i tried to remove the TPS from the RB20 to check it out / mock fit it to the RB25 and i couldn't get it off. Didn't pull very hard but it seemed rather connected to the throttle body.

Will the entire RB20 TB fit on the 25? or are we swapping just the sensor? If so is there any information on this? :)

Does that work? I removed the RB25 TPS and it looks rather different inside, aka it has a mechanical mechanism or lever that moves with the throttle body which turns the SENSOR.

I coulnd't get my RB20 TPS off.. but from images it looks rather different. It looks like it will bolt there... am i missing something? How does the 20 TPS work? airflow?

Sounds like you've got a S2 RB25, you can't switch the RB20 TPS over to the S2 RB25 throttle body.

You'll need an RB25 Series 1 throttle body, the RB20 TPS will bolt straight on.

I'm not sure if the TPS share the linearity, You may be able to wire in the RB25 TPS.

TPS work by sending a 0-5V signal to the ECU. The voltage sent to the ECU depends on the amount the throttle is open. 0% = 0.5V approximately, 100% = Close to 5V IIRC.

Darn, ok well if i was to get a S1 Throttle body.. does anyone know if that will bolt on? (i've tried searching..)

Also my RB20 tps plug goes on the S2 RB25 TPS top plug .. both 3 pin. Anyone know if that will work haha?

I've heard one is for the auto.. is it top or bottom?

Easiest thing to do is send the ecu back to NIStune, they will rewrite the base image to suit the rb25 TPS.

The rb25 tps can be fitted to rb20 TB but have to change the shafts over and a few other niggly things.

Its easier to wire in the rb25 tps and base image

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

    • 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.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...