Looks like the link above was corrupted, I found it here...

http://www.4x4wire.com/toyota/maintenance/tacoma_4runner_30k/maintenancep5.html#maf

Here's the codes my T-100 popped
dirty MAF
Throttle sensor failure
misfire in number four cylinder

I'll try cleaning the MAF and see if it comes back.
I'm thinking about replacing my K&N with a stock filter, what do you guys use on the trail?