Jump to content
SAU Community

Recommended Posts

Hey guys, i have a few questions in regards to wiring the EMS to an RB25. We're doing it ourselves and we have hit a few problems, the manual EMS provides doesnt have a lot of information so i was wondering if anyone with any experience with these could help me out.

1) Can you wire the VVT, and where to on the ECU?

2) Fuel Pump to Aux 1?

Tacho Out to Aux 2?

3) When wiring coils to the ECU, the ECU supplies ignition 1, 2 and 3. Does:

IGN 1 - coils 1 and 6?

IGN 2 - coils 2 and 5?

IGN 3 - coils 3 and 4?

4) Can you have TPS(from RB30) closed and TPS wide open with automatic transmission?

5) The ECU provides two wires for the injectors? Which 3 injectors go to each driver?

Any information would be awesome. Cheers for taking time to read anywayz!

Link to comment
https://www.sau.com.au/forums/topic/189892-ems-4424-v4-to-rb25-ser2/
Share on other sites

Hey guys, i have a few questions in regards to wiring the EMS to an RB25. We're doing it ourselves and we have hit a few problems, the manual EMS provides doesnt have a lot of information so i was wondering if anyone with any experience with these could help me out.

1) Can you wire the VVT, and where to on the ECU? If your EMS is not to old it will have 4 AUX outputs,Use one for the VVT,AUX to one pin on VVT and 12v to other. Tuner can setup.

2) Fuel Pump to Aux 1?Yes Turn on in software

Tacho Out to Aux 2?Yes Turn on in software

3) When wiring coils to the ECU, the ECU supplies ignition 1, 2 and 3. Does:

IGN 1 - coils 1 and 6?

IGN 2 - coils 2 and 5?

IGN 3 - coils 3 and 4? Yes to all.

4) Can you have TPS(from RB30) closed and TPS wide open with automatic transmission?Hook To the 3 pin plug that is a pot resistor not the one that is on/off.

5) The ECU provides two wires for the injectors? Which 3 injectors go to each driver?Should have 3 outputs so use INJ 1/2/3 batched.

Any information would be awesome. Cheers for taking time to read anywayz!

If your EMS has 2 Aux outputs and 2 inj drivers then this is not the ECU for you,Trade for later EMS or other. Read thru the reply as there is notes added. Edited by N I B

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

    • It is a kunfine Android screen . Does anyone know the wirering diagram of the fuga ??
    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
×
×
  • Create New...