Managed to make use of FORScan to adjust my tire size so that my actual speed is closer to indicated. I'm still going faster than indicated on the speedometer, but 2% off is better than 13%. Last time I tried, I got a code in the TCM, so I reset back to original. I still got the code this time, but FORScan now has a recalibration feature so the PCM, BCM and TCM are back in sync. Everything seems to work better, with revs and shifts matching better. Ideally would like to regear but that's a ways off.
Started getting ready to swap my PIAAs to Baja Designs. LP6s arrived, but LP9s are backordered. Making up the wiring harness and switching for the options available with the lamps.