As much as I've loved having my timing advanced slightly (more high-rpm power), I think its time to go back to standard. The lack of low-end torque is starting to get annoying from stoplights, especially now that its no longer cold out, so the truck doesn't stay at 1500 until it warms up. Before, it would usually warm up right as I got on the highway, so the stoplights up to the highway were buttery-smooth shifts. The advanced timing leaves a torque gap at around 1700-2200 rpm, so its more work than normal to rev match. Oh well... goodbye 19mpg highway!