Quote: Originally Posted by
digimotojoel 
You can get single protocol interfaces on ScanTool.net for like $50 now ~ imo that is a great deal if you are shopping on a budget.
imho that's probably going to be more costly in the long run, think about it... you will be getting a new car at some point and then you will be spending more money on a unit that is compatible with that other car, I think in the long run it's much better to stick with a multiprotocol unit, specially since nowadays you can get one for just $ 35 more than a single protocol unit.
Paul
www.obdpros.com