Both KL31 and 36 have the VRIS points for the Straight Neck. Eunos 800 uses a different ECU that will not fit our cars.. I think the difference between the ECUS are that one is for ATX and one for MTX, but both should do the job just fine .wytbishop wrote:One is from an MS8 (J-spec MX6) and the other is from a Eunos 800 (J-Spec Millenia)...not sure which is which off the top of my head. I believe the KL36 is the MS8 ECU.
The main difference would be the VRIS points. The MS8 had straight necks and the Eunos 800 had curved necks.
Im surprised you havent pulled any codes yet? That is always a good way to start. Just jump TEN and GND and memorize the codes.