Post by
S14tat »
https://forums.nicoclub.com/s14tat-u875.html
Mon Nov 28, 2005 3:29 pm
yes the SAFCII you would need to find the knock sensor wire on the ECU harness since the SAFC I does not have a knock meter function.
now about the 91 ecu having 2 wires for the knock sensor i'm not sure about.
and there are more features on the SAFC compared to the first one. such as you can fine tune it more cause they give you 12 points of adjustment instead of 10, and they can store 2 maps instead of just one. so thats all the difference that i'm aware off ( i have used both versions )