Jump to content
SAU Community

Recommended Posts

Hi,

I have a GTR power FC which will not save it's values. You can change the value eg idle RPM & the Idle revs don't seem to change. Also after you turn off the ignition (& back on) the value you set it to is back to the previous setting.

My car is an R33 GTS4 with RB26DETT, it's running fine from a standard R33 GTR ECU.

Things I have tried:

Checked all power & earth connection to the ECU as per nissan wiring diagram - OK

Tried another PFC with my hand controller in my car - has the same problem

Yet to try:

My PFC in another car

Another Hand Controler with My PFC

My deduction so far is that it is either the car's wiring or the Hand Control...

Can any body help, or know of a good workshop who could help to sort this out.

Thanks in advance.

Link to comment
https://www.sau.com.au/forums/topic/58003-gtr-power-fc-experts-wanted/
Share on other sites

Hi,

I have a GTR power FC which will not save it's values. You can change the value eg idle RPM & the Idle revs don't seem to change. Also after you turn off the ignition (& back on) the value you set it to is back to the previous setting.

My car is an R33 GTS4 with RB26DETT, it's running fine from a standard R33 GTR ECU.

Things I have tried:

Checked all power & earth connection to the ECU - OK

Tried another PFC with my hand controller in my car - has the same problem

Yet to try:

My PFC in another car

Another Hand Controler with My PFC

My deduction so far is that it is either the car's wiring or the Hand Control...

Can any body help, or know of a good workshop who could help to sort this out.

Thanks in advance.

Probabley locked by Excel tuner... find a Datalogit owner and they can unlock it for you... It won't cost over $1000.

Oh, you say two different PFC's do the same thing? Well thats a different story.

Will it accept a change to the ignition or fuel map?

TT

Thanks Tom, I think it was you who suggest before it may be locked.

I took it to croydon & had Jim check it out, he said when it's locked that you cannot even access the fuel map menu etc.

Mine is all there, it just won't save. :(

Hi,

I have a GTR power FC which will not save it's values. You can change the value eg idle RPM & the Idle revs don't seem to change. Also after you turn off the ignition (& back on) the value you set it to is back to the previous setting.

My car is an R33 GTS4 with RB26DETT, it's running fine from a standard R33 GTR ECU.

Things I have tried:

Checked all power & earth connection to the ECU - OK

Tried another PFC with my hand controller in my car - has the same problem

Yet to try:

My PFC in another car

Another Hand Controler with My PFC

My deduction so far is that it is either the car's wiring or the Hand Control...

Can any body help, or know of a good workshop who could help to sort this out.

Thanks in advance.

You have to save the changes, have a look at the Commander Manual it shows you the steps.:)

I'm pretty sure I'm saving the settings as per the manual, Jim from Croydon Autosports also confirmed that the values are not being saved. He blamed the wiring.

Tomorrow I will try swapping HC & PFC into a known working GTR & see what I can work out.

S/N of PFC PFC-RB26-9605-0349

S/N of HC FCC-NT9605-0366

I'm guessing that the "9605" means that they should be matched.

You'll find it is the wiring in the vehicle to the ECU that is the problem....

A couple of the pinouts require permanent power and then there is a shutdown sequence where the ign switch power is shut off to certain pinout and then the ECU then saves settings and turns itself off. Any change in this power down sequence,(different wiring, alarms, immobilisers)wil cause the symptoms you describe.

Similiar to pulling the plug on a windows based PC rather than shutting it down correctly....

cheers.

RPMGTR, looks like you are correct.

I tried my PFC&Commander in a real GTR today, Thanks to NVDAGTR :P , & it worked fine :(

I noted all of the pins on the ECU which had power, now I can test this in my car & hopefully find the variance....

It's strange how the factory ECU works without whatever is different!

RPMGTR, looks like you are correct.

LOL... How many times have I heard that before...?

The difference with the stock ECU is that, it doesn't have to save any changes, as it's not programmable.

AFAIK, there is no save function with the commander, it applies the changes as soon as you change any parameter. The changes are saved when the ignition is turned off, which explains your problem.

Is the GTS4 wiring same as the GTR wiring...?

Is the GTS4 wiring same as the GTR wiring...?

Would I be having this problem if it was???

I was just hoping that if people had heard of this problem or experienced it so many times they could say something like "yes, pin XX needs contant power for the data to be saved".

Hopefully I can sort it on the weekend & post the results here for future reference.

According to this site (click), most of the Nissan ECUs share the same pinouts.

Your problem is that RB26 transplants in an R33 GTS4 is not very common, give SDU a try as well. Different models of skylines are more prominent there.

Good luck on the weekend.

The Weekend has been a success :wassup:

Pin 16 & the ECCS relay power supply turned out to be the culprits

You don't know how long I have been trying to solve this.... very frustrating :)

Attached are my finding for all those who have this problem in the future.

Thanks again to NVDAGTR for letting my try my PFC in his car :)

just had a response from the Datalogit forum from an SR20 punter who had experienced the same problem!!!

Do you have a wiing diagram - or the rest of the one above. I have'nt seen one so clear before.

TT

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

    • Shouldn't need a "base map" for anything other than guidance to ignition tuning. You just need the engine capacity right, the injector size right, and something, almost anything, for a VE map. On an NA engine, fuelling is almost completely a function of load signal & rpm. It should run and drive with a completely flat fuel map. It will be too lean under load, but that's easily fixed. We used to tune all ECUs without any base map. There were no such things (until someone had tuned a near stock engine on one, and then they had a "base map".
    • What did you actually buy/how much did it cost? When I got mine in like.. 2017...? 2019? the aim was to run Torque for gauges via ODB2 and things like Track Addict/Laptimers/Dashcam/Reversecam/Spotify etc. Mine never broke, but I wonder if you've got the same needs (it sounds like it). Cause I liked the idea of being able to do anything with it. That said, yours also cost 3x the cost of what I spent so... food for thought.  
    • For me there is a massive difference in manufacturer or big brand crippled android (Sony, Kenwood etc) vs the sort of thing I've installed here, which is basically just a tablet in DIN form factor with open Android, and the other model of course is mirroring - Android Auto/Carplay. I hate the locked down manufacturer and AA options where they decide what apps I'm allowed to install, including the Launcher but also importantly things like Ecutek (for this car) or Real Dash (Stagea) are not supported. Plus those crippled versions tend to be slower due to both overheads and lower spec hardware. On the other hand, when this breaks I'll likely be in trouble for support....but how is that different to owning an Infiniti anyway
    • Yeah, Duncan is helping sell me back to Android devices. I've hated the whole Android head units due to their speed issues. Even in my old Hyundai Kona (2022 model), it behind the scenes was Android, and slow and shitty to start up. Once running wasn't bad, but still a good 15 to 30 seconds.
    • My roof rails are off atm on the E39 until the rust is fixed. I did find another little bit of surface rust under the rails when I took them off. As @soviet_merlin said I'd just leave them alone unless you're planning on ensuring they're properly sealed. I was on the fence about leaving them off as the delete is still a thing in BMW E39's but I feel like the car is missing something (er, it is, der) with them off and I'm looking forward to putting them back on.
×
×
  • Create New...