EGTs,boost,eng temp and most importantly trans slip. It also gives a warning sound for preselected speed, EGT, engine temp and boost. the Attitude will display upto four readings at one time. you can choose which you want to see from rpms, speed, eng temp, eng load, boost, backdown, trans slip, gear, converter lockup and I belive something else but I cant think of it right now. the newer ones also will show records such as highest EGT, highest speed , highest boost, highest rpm and will also measure 0-60 mph times, quarter mile times and speed. from what I can tell it is pretty accurate in the acceleration test.
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