THROTTLE POSITION (range of 0 to 100%)

This just simply shows the position of the Throttle Positino Sensor (TPS) on the throttle body. You can use it to watch the accel enrichment while you open the TB or to tell when your WOT pass starts or watch your shifts when you let off the gas during the shift. You should see a nice and smooth increase with a slow and steady increase from your right foot on the gas pedal. If it's not smooth your TPS could be going bad. The actual lowest the reading will show is somewhere around 10%.

One key note here. Make sure it reads 100% when you go WOT. If it doesn't you need to adjust the throttle cable to make the TPS read 100% when you have it floored. I had to adjust mine because the TB wasn't opening all the way.