csburdick

I see you're a skeptic in all aspects ;) Horsepower can be estimated based on weight of the vehicle and velocity. HP is usually calculated based on torque as you said, but can be estimated if torqu...

It's very useful to be able to clear check engine codes when diagnosing a problem. For example, if you get a check engine code that is a temporary problem and fixes itself, many times the code won't c...

Bristol: It reads directly from the OBDII port, and many cars provide MPG readings through it. It's not an estimation; it's what the car is telling the device that it's getting. Also, not all readings...