Jump to content
SAU Community

Recommended Posts

Hey guys, I've been given a R34 GT-T ECU thats been reflashed/tuned by Dr Drift, could I plug this into my R33 S2 GTS25T? I'm guessing it's not going to be plug and play, I didn't achieve much out of searching. has anyone done anything like this before? I've also been given Splitfire coilpacks for a R34, bigger fuel pump and bigger injectors. a quick search tells me the coilpacks will fit a S2 R33, but the injectors won't without modification. Help is much appreciated, cheers.

Rover.

Link to comment
https://www.sau.com.au/forums/topic/304233-r34-retuned-ecu-into-r33-s2/
Share on other sites

The R34 ecu has a diffrent pinout/plug to an r33, so unless you use the r34 loom aswell it won't work. Or splice the r34 loom plug into your r33 loom. But either option would be quite a big job. What is the ecu tuned for? I.e what mods etc was the r34 running? Would be interested in buying it off you if you decided it was too much work to make fit. Hope this helps you.

The R33 S2 and the Neo version coil packs have the same plug however the Neo coil pack has 2 mounting bolt holes and will not bolt on to the R33 coil pack rail as spacing is different.

The S2 coil pack has 3 mounting bolt holes.

So the Neo coil packs should work in the R33 if it comes with its rail.... providing the entire rail will bolt on to the R33 head.

The R34 ecu has a diffrent pinout/plug to an r33, so unless you use the r34 loom aswell it won't work. Or splice the r34 loom plug into your r33 loom. But either option would be quite a big job. What is the ecu tuned for? I.e what mods etc was the r34 running? Would be interested in buying it off you if you decided it was too much work to make fit. Hope this helps you.

the ECU came out of a 34 that had splitfires, blitz ebc, fuel pump, injectors, bigger turbo and fmic. Currently tuned to 270rwkw. All belongs to 'hamoti' on here who wrote it off a few years back. I'll have a chat to sam from dr drift tommorow. Cheers.

So the Neo coil packs should work in the R33 if it comes with its rail.... providing the entire rail will bolt on to the R33 head.

Neo coils bolt directly to the head, no rail. They are also all facing the same way and the spark plug is in the center. I know some guys here that will just sit the coil on top of the plug with nothing holding it down because Neo packs are hard to find.

As for this ECU swap, it will be very hard to get it right. The VCT solenoid works differently in the Neo than the R33. Also, the Neo has more vacuum switches to run emitions stuff that isnt on the 33 motor. It will be a big pain to switch over ECU plugs as well. Just save yourself the trouble and get a Z32 ECU if you want to Rom tune.

Spoke to Sam today, 34 ECU into R33 is too much trouble. And a flash tune on the stock 33 isn't worth it. Instead he suggested an R32 ECU + VCT controller, quoted me $1000 everything supplied, fitted and tuned. Sam also told me the Z32 ECU is an option but they're not quite right with idle and a few other things... He also gave me the option of GTR cams with cam gears for the VCT dilemma, but highly recommends an R32 ECU + VCT controller. Anyone have any other suggestions? I read Rising Sun on here can retune R33 ECU's, need more info though.

Cheers.

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

    • What does it look like with highway driving? And yes, I had a similar thought as Duncan. It looks quite similar in my Stagea and I have made myself accept it as normal. Might have to look into it some day  
    • While I was waiting for the new parts to come in for the charge pipe and radiator I decided to do some turbo modification. The drive pressure (exhaust backpressure) was a lot higher that I thought it should be. For 32lbs of boost drive was 55lbs. The turbine housing is a 1.10AR and my turbo builder has suggested to go to a 1.25AR. To test if a larger AR would do anything to reduce drive pressure AND not spend any money I decided to hog out the divider in my current housing. I removed it from the inlet and the whole way through the housing.  After reassembly and testing it doesn't look like this modification did anything for reducing drive pressure or requiring more fuel (making more power). Oh well, it was worth a shot. We'll get some data at the track if it makes it past the 60ft. I also machined a $7 shift knob off Amazon to fit my Stillway shifter since I didn't like the Stillway shift knob. Next on the list was the radiator replacement and fabrication of a new intercooler tube that had no silicon coupler. No pictures of this - I was short on time each night after work to get this done and didn't stop to take pictures.  Next was to get the clutch disks out and replaced. Previously when installing the dogbox I had ordered a set of the same sintered iron disks I had been running because I switched to the 26-spline input shaft. I thought it was odd that they didn't have any markings or brand name on them like all my old disks had but installed them anyway. At the track I could not get the clutch to lock up using my normal strategies. After two track nights I reached out to the clutch manufacturer and ask their thoughts. They said they had to switch the material out because they were having trouble getting the original material and that this new material would not take to being slipped very well.  So out with the first set of 26-spline disks and in with the correct material 26-spline disks. While I had the trans out I added an inspection/service hole. I've wanted one of these for a while. Now I can have a look at things and change the front cover shimming when needed (clutch wear). I hustled and got the clutch change done in a few hours on a Saturday. Hopped in the car and drove home. On the way home I did a 1-3 pull. When shifting from 2nd to 3rd the core plug in the back of the cylinder head popped out and dumped all the coolant. Thankfully I was only 30 seconds from home and coasted it there. Datalog showed nothing unusual and 2.5psi of coolant pressure. That plug has been in there since 1992 but I guess it worked its way out. Pulled the trans AGAIN and replaced the plug, JB welded it in, and made a brace. Also deleted the head drain I had added in during the bearing issue fiasco.  I am currently changing my boost control plumbing to make it cleaner. After that is done I'll make another attempt at getting past the 60.
    • Are you 100% sure this isn't tune related?
    • 140-150 across the board. At this point hoping the grounding harness fixes it. My grounds are all tied to the chassis and none to the battery. For SR and KA that’s never been a problem for me but had a few other guys here and Reddit who told me RB really like a very solid ground setup tied to the battery so going to try that next, I’m stumped if that doesn’t do it. Never had a car have spark and fuel and not fire off before. Only thing I can think is the spark is intermittent/weak because of grounds nothing else really makes sense at this point 
    • I am having close to the same issue. Can you help me with what wire you grounded to get your pump to trigger?
×
×
  • Create New...