you're right, there were evap canisters and different vacuum line setups on the 96_99 OBD2a engines. there are even differences on the 99-00 OBD2b engines. are you running a 94 P75 ecu still?
__________________
DB Squad
Integra Forum Moderator
2016 BMW 340i M-Sport / 2013 Chevrolet Volt / 1999 Subaru Impreza RS EJ205