The DashDAQ is a lot more expensive, but it does a lot more. It's a datalogger and will read and clear codes. The bonus comes with the electronic gage displays. Check them out at www.dashdaq.com. I really enjoy having one. But it is pricey at about $500. But I'm sure Rob at NeedsWings could get you a good price on it. Add on a Zeitronics ZT-2 for a wideband AFR and you've really got something.