Just for future ref, evoscan does work on the gen3, 2003+ 3.8s. I threw a DTC on the way to Red Deer today. Evoscan said it was a P0456 (evap emissions small leak). Probably didn't tighten the gas cap enough. Lol. But it does pick up the 3.8 in case anyone is wondering. You can scan through obd or MUT2 protocols. Also works for abs codes too.. It couldn't do a damn thing with my diesel though. Heheh...

1991 HZJ77, 1999 KZJ90, 1999 UZJ100, 1992 M101CDN2
https://www.thegearheadproject.com/category/jdm-journeys/