Hi, i'm after some help, I'm trying to confirm the sub board my ECU has. I think it's from a CA18det? I have removed the cover and the square "chip" is marked, D4212WG 220301 There are also 2 rotary switches in there with positions A-F, 1-9. Could someone confirm what this is set up to read? Can it be changed to read other optical triggers? SR20? VG? VQ? RB's? GA's? Any help will be much appreciated. Thanks Jeff