I'm only running 5.25lbs of boost with my turbo on the stock fuel map. The truck is 100x better on overall drivability at my home area 6500-10000' elevation range. 99% people won't need to go beyond the stock map to be happy. If you want more...
I used this thread as a guide to install a Redarc Tow-Pro V3 into my 2006 LX. I also used a Tekonsha 3040 wiring harness that I cut and spliced into the Redarc provided one. There is a Redarc harness that is specific to Toyota but it was not...