You convert to obd1 so you can tune it. There are no true obd2 tuning options - If you want to tune an obd2 honda, you have to use a piggyback, and most tuners and people that diy tune their cars would call that a sort of a hack job. Piggybacks don't offer the flexibility of being able to completely retune a car for different apps, such as turbo or high compression, because they can only modify to a certain degree the stock maps. go to xenocron.com to get the stuff you will need to convert.
Warning: if you live in California, KEEP ALL YOUR OBD2 STUFF. You won't be able to pass smog 'legally' without it.