I would go OBD2 in an OBD2 car, unless you are looking to chip your ECU. My reason is that any monkey with an OBD2 reader can just plug right in to your ecu and read the codes. Honda does have this built in, but it is way quicker with a reader. Plus, you just tell the reader to erase the codes, and it does, no messing around. However, since I'm OBD 1, that's right where I'm gonna stay, happily.