hks fcd found in donor car... worth installing in swap?
 

I found an old hks fcd wired into the donor 89 turbo I just bought. Silly me, I ripped it out without taking notes on its wiring. Black, red, yellow and white wires coming out of it, it's the old model I'm guessing, with a 0-12 dash pot adjustment (wtaf is that about?)
I plan on using an safc2 (maps split by vacuum or boost situation rather than throttle position) for adding fuel and am just looking to make sure my 99% stock setup is solid. I did get the car with an RB rev2 exhaust system and am modding the turbo for an ewg to combat boost creep.

Thanks in advance for any help.

fcd is kinda 1990 :-)
a rtek chip or standalone is the better routes.