The goal here is passing emissions. Colorado emissions are pretty strict and older cars are put on a rolling road for an exhaust sniff test. Getting most older cars to pass isnt an issue as long as it has been reasonably maintained but in the case of a swapped car with no EGR and a cheap Magnaflow two gas high flow cat, theres no way it will pass. Then 2020 happens and people are keeping their distance from each other and trying to limit contact, to which Colorado emissions stations have responded by not doing sniff tests and instead only checking for OBDII compliance. When I was initially doing my swap I came across a thread from Doug Copeland where he learned that a 1ZZ ECU will actually run a Redtop. I looked this thread back up and found that sure enough, a 1ZZ ECU runs the e fine surprisingly well. There are 3 differences in the wiring, one of which is the W pin. If I can get this working, then I can move this car right through emissions.
Upon initial test, I found that the 1ZZ ECU does in fact get the engine running, although the CEL doesnt work.

Comparing pinouts with some help from Jordan, I moved the W pin on my harness from E2, pin 6 to pin 15. This got the light working perfectly but still cant connect my OBDII scanner.


Currently doing some research to see what it will take to get the OBD scanner to connect. It may be easy to or could be a giant nightmare and not worthwhile.

The acute observer will notice that the ST205 had Colorado plates where the BEAMS remains registered in Indiana, if this gives you any idea of the issues I face with Colorado emissions with a swapped car.