I have had my ultra gauge for a couple of weeks now. I have been experimenting with different gauges. I recently added a horsepower display along with torque and % engine load. I am wondering how accurate the HP is. I have a Trifecta tune and a Solo exhaust on my GXP. Yesterday, I managed to get an HP reading of 349 in second gear with my foot to the floor. WOW! It is also interesting to note that I can get the % engine load to read 100, in say forth gear and heading up a slight slope at only 30 mph. Shifting down a notch and the reading drops a bunch. Not sure what this means right now or if this will affect my driving habits. The only thing that I was disappointed to learn about the unit was that there is no oil pressure gauge. Still, for the $70 dollars it cost I think it is well worth it. And by the by, I did get my $9 refund.