I think you have the G-Tech pro Compitition, from what you have described. Mine is just the G-Tech pro. It just gives HP... 0 - 60 times 1/4 mile times and Longitudinal and lateral Gs. I use 3,400 lbs also and doing HP it avaraged 244. 0 - 60 in something like 5.7 seconds. I haven't done any 1/4 mile times. Because like the 0 - 60 times and HP you need to make several runs in both directions and average them. I just haven't taken the time to find a secluded road where I can make 1/4 mile runs like that. Afetr seeing what I got for HP and 0 - 60 I have some serious doubts about the accuracy of the G-Tech.