[gtpvette]

When going through the wiring harness I noticed there were no pins for the VSS (Speed Sensor in Transmission) which I guess is normal for an automatic car. I did a few searches and came across a Miata swap thread where the OP was struggling with the same issue as he was trying to pass emissions for a street car. It turns out the PCM really needs to be from a manual car to support the VSS and due to a few additional issues a 2012 PCM is really the way to go (E39 versus an E39A PCM). Also,, V8Roadsters only mods the E39 PCM not the E39A. I’m chasing one down,,, looks to be about $100.
There are a couple of good build threads here...


https://www.miataturbo.net/build-thr...x-build-87186/