Does anyone use one of these.
i had bought one and it seems to be pretty accurate with some things the rmp guage is right on my 60 ' time is 1 tenth off my 1/4 time was pretty close to accurate my 1/4 mile time is 13.1 and the gtech said it was 12.9 but the horse power was wayyyyy off my hp is 325 and it said it was 450 so hope that helped out i do like it though its a neat gadget plus u can upload ur data on your pc
Here's an FYI. If you happen to have an iPhone, you can download a free app called Inmotion PocketDyno Lite that does some of the same stuff. You can also buy the + version that has more features. It works off of GPS.


