etan: Basically somewhere around 8,000ft my crappy $15 ebay compressor is unable to reach the 115psi required to trip the shutoff. It's always enough to run the locker, but some times it cycles a while trying to get there. I have a check valve between the comp and the tank, so I don't lose all my air through the weak seals in the cheap compressor.
This was my first run down in CO with the TTORA crew. I had an absolute blast. I drive a 1998 4runner (4cyl/5spd/4.56s) with arb in the rear, 265/75/r16 Nitto all terrains (31.5s), with the running board delete mod. I also have a few custom dents in the front and rear bumpers.
The trail was a bit harder than I expected for "ok for stock." Some of the rocks were kind of large, on crystal mtn especially. I high centered on my gas tank at least 3 times before I got the hang of how to avoid it. I was glad to be with experienced company.
This is also the first time I've really wheeled the 4Runner, which may contribute to my impressions of the trail. Basically, the Runner is a heavy pig. Full on heffer. The locker worked awesome - money well spent. I love just flipping the switch. I was definitely envious of everyone's sliders, though. I might have to get some.