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I’m in the process of learning how to tune but with one major setback, I’m not sure what I need to convert my obd2 to an obd1 I’ve been looking into the s300 hondata but I just don’t how it works at all , I’m new to working on Honda’s and was hoping maybe someone may have the answer im looking for .

 
Rep Power: 126

Lots of threads online documenting how to convert from OBD2 to OBD1.

Hondata should have decent instructions on its website. If not, YouTube. If you’re still having trouble, I’d take it to someone who knows what they’re doing. Tuning isn’t something you want to guess at.