The UltraGauge is a new competitor to the Scangauge II, but at half the cost, and a more modern look. Okay, this isn't a review, because I can't possibly top the review this guy gave - it's the most entertaining review I've ever read, I do believe:
http://www.451s.com/forum/topics/installing-and-evaluating-an
I bought mine for $76 shipped; ordered it on a Thursday and received it on Monday. I will get $9 back when I get around to their rebate process. The gauge can be bought, and a lot more information including the users' manual, can be found here:
http://www.ultra-gauge.com/ultragauge/index.htm
I personally can't compare it to the Scangauge II, since I don't have both. I know that I like the look of the UltraGauge better? But one thing I haven't seen posted - just what gauges does one get with the UltraGauge? And here is the answer to that question. Below is a pic of the gauge (sitting in Park), the top left is the main menu, then the rest of the screens show every gauge available in our dear smart, 49 in all.
I mounted mine just like Ptero did. I am not sure if I'll find a better place or not. It's really in a perfect, easy to see place - but being on that long mounting rod, it shakes a bit from time to time. And as Ptero say's, it looks "a brain puzzle for crackheads", being out in the open like that. I want to find something to hang on it when I get out of the car, like Brabus007 does with his GPS.
I'm having a lot of fun with my latest driving distraction, watching the Engine Load fluctuate while going up and down hills, watching my instant and average mpg - I can hardly wait to fill up this weekend to see how accurate it is. Being a computer nut, I naturally love having another computer.
It shows 6 things at once, and you can set it up to cycle thru 3 screens of 6 items, but I doubt I will do that; it would be hard to deal with it always changing while you're trying to look at something, I would think.
Overall, I'm thrilled with it so far, 4 days into ownership! Feel free to ask any questions, and if I can, I will answer. I have not been a hypermiler by any stretch of the imagination, and probably won't be now either.