You're likely trying to search for 99-00 Civic Si specifically. ODB2a/b standards are just that, with the exception of fuel pump wire.

I would not recommend running the emanage, as it is nothing more than a picky back feeding garbage into the ECU in order to achieve desired AFR's. Sell it to someone that may not know any better and grab yourself a Hondata, Crome, etc. Then get tuned. Simply trying to save you some money. I've yet to see a Blue Box not make an engine run lean at some point. It's only slightly better than VAFC hack or FMU.