Thanks kewlynx. I had read that article and checked out the links. There are a lot of different OBD2 "links" out there now though. some even claim to be able to write or "flash" to the ECU. I'm wondering if anyone has any experience with any of these.

'93 4Runner - 3.4L 5VZ-FE, 2" body lift, on-board-air system, custom gauge cluster, rear e-locker, electric fan, custom built front and rear bumpers, sliders, 4,88 gears...all on 33x12.5's.