ok i always wanted one of these so i picked one up on ebay for $32. i have a stock na roadster. i set the weight for 3500. left the rest default. i was on a slight decline so i know that helped my times a little but here's what i got:
1/4 mile:
97 mph
14.87 second
135 hp
154 hp

0-60:
6.34 second
141 hp
161 hp

There are a few things i'd like to change about this unit. i wish you can do 1 run and get both 1/4 mile times as well as 0-60. the other thing i'd like is if it would store max g forces in memory. i doubt very much i'd be rounding a turn and looking at the meter to see my max g force.