The check engine light as been on a while now and I wanted to see if any new codes has sown up or I was still dealing with the dreaded P0401 code. Rather than have Autozone check it I thought it was time to buy a OBD scan tool. I found the BlueDriver from Lemur for $29 with 2 day shipping and free Iphone app. The app is pretty basic but did the job. It reads the codes and pending codes and will email them in a report, it also has a tachometer & speedometer with speed warning and max speed achieved. The device itself is pretty small and I was able to drive with out it hitting my knee. I was able to use it on my 96 Lexus LX450 with out any problems and took less than a min to sinc to my phone. All in all I am very happy with this product.