Scan GaugeII $100
Cost $160 new.
Works great, like new. Ive had it for a few years. Few small rubs on it. Used it in my gtp for scanning knock, boost, trans temp, rpm, fuel trims and other things. Check and clear codes, scan tons of parameters while you drive for real time data. Back ground color is switchable to match dash colors.
http://www.scangauge.com/products/scangaugeii/
http://www.autozone.com/autozone/accessories/Linear-Logic-ScanGaugeII-with-trip-data-computer-real-time-display-of-operating-conditions-and-scan-tool//N-26p9?itemIdentifier=914192_0_0
