Hi Suggestion on Upgrade High-Cam for original B16A BIG VTEC DOHC . Honda Civic JDM 92-95 B16A2 SiR II VTEC dohc . ECU P30-37820-000 Manual Transmission c/w LSD g/b . Need help on this problem . If I want to upgrade high cam from original B16A head high cam what I need to change / buy ? Isnt I need to change/buy : - - retainer cap - valve - spring - ……anything else ? thanks.