HELP!!! s13 w/ rb25 power fc wont save data

[tpetrucci33]

Ok i know most of you are gonna tell me to research but i have. My power fc isnt saving any changes when i power down the car. I see what i need to do but dont exactly know what to do physically. I need to wire pin 58 to a relay. Which one Im not sure of. Any help would be greatly appreciated.

Thanks

[drift freaq]

Ok i know most of you are gonna tell me to research but i have. My power fc isnt saving any changes when i power down the car. I see what i need to do but dont exactly know what to do physically. I need to wire pin 58 to a relay. Which one Im not sure of. Any help would be greatly appreciated.

Thanks

This is actually a common problem with a lot of SR swaps as well. What it is and bear with me as I doing this straight from memory. LOL

The problem is the PowerFC needs a momentary amount of Power still going to it after you turn off your ignition switch so it can save your changes. Now literally what you need to do is find the wire going to your ignition relay and wire it to a power wire so it will stay on momentarily. In stock cars in Japan this is done. The problem is when people do SR and RB wire jobs they inadvertently eliminate this little circuit loop, if you don't run a PowerFC you would never know you need it.

I had the same issue with my RB with PowerFC and this is what I did to correct it.

[tpetrucci33]

so ignition relay straight to the battery?

[951's 330i]

so ignition relay straight to the battery?


Type in google "paulr33 apexi power fc" Its for a rb but he covers the same problem. Not sure if it will work though since its a sr

Edit: Lol my bad saw yours is for a rb, so it will help you actually lol