Passing this info along from another group.
They are offering a "group" purchase discount on scan gaugeII
$150.00 USD includes shipping. Just in time for Christmas.
I am wanting to get one as I know it would provided lots of info.

http://www.cleanmpg.com/forums/for-salewanted/t-scangauge-ii-w-x-gauge-group-buy-15000-7597.html

highly recommend getting one. they can also be found on eBay for $160ish.

Is this the newest model? And the link doesn't work for me. I'll try it again tomorrow.

my link is working .