[wagonman76]

I was a little scared by the mpguino at first, then I built one and was surprised how easy everything was. It was not hard to make at all, plus now they have prebuilt ones for sale, you just have to craft a case which can be made many ways. All you really need to do is locate a few wires in your car to tap into. It is very easy to use too, and the wiki page tells you everything you need to know. To calibrate it is just doing simple proportion math.

There are a lot of internet projects that are not all they are cracked up to be, but this is certainly not one of them. Dcb and others have done a remarkable job with this. I built 3 of them and have only had one problem (and that was probably my fault since I did not use the recommended display on that unit). After I fixed it, it was rock solid, and both others have been rock solid from day one.

I highly recommend it.