I guess you don't own one, but have you ever used one? I really like to get as much feed back as possible, anyone?AnArKey said:Better way of doing it. And probably cheaper in the long run. You shouldn't need it all the time is the problem. I'd happily pay $30/day to rent one. Considering a dyno will charge you about $100 at least for a hour session. You could tune your car perfectly with the datalogging version of the FJO in a short matter of time.