Good afternoon guys and girls.

So I've picked up a powerfc for my gc8 97 wrx.

Its the right model, 3 yellow plug version and I've followed the tip here to swap the ecu pins and it starts and runs fine.

Whats wrong is when I turn the car off it defaults back to the base map.

I've read here and other forums that the eccs relay should leave power on for a few secs to allow the pfc to store maps and settings.

The Muppet who owned my car previously had a crap alarm fitted and removed it but the old loom is still in it. Its embedded everyone and it's a mess. He's cut and shut wiring.

The engine has also been swapped and I fear he has wired up the eccs relay a bit dodgy.

The question I have, what pin of the powerfc needs the 12v to hold on longer? Rather then fight the loom, i have install a 2 sec delay relay and power that pin from 12v source.

Does the powerfc have a 12v constant?