1. 96+ are all obd2

2. see 1

3. see 1

4. if you can afford might as well go for it...if not then i wouldnt worry too much about it, its more of a prestige thing than real performance.



all h22's are 92+, they are all obd1 or obd2, 91 and earlier civics are non obd or obd0 depending on what you want to call it...