1G JDM b16a and all USDM b16as have a compression ratio of ~ 10.2:1 and hp rating of 160. The 92+ 2G JDM b16as have a c/r of ~ 10.4:1 probably also different fuel and timing maps to make the extra 10hp.
If you want to run a b18c1 engine well in a 4G civic/crx you should use a b16a1 or 92-93 cable tranny and have someone who knows wiring pretty well wire your ecu to obd1 to run the Gsr ecu and your injection to 92+ type.
A cheaper easier way would be to remove the secondary butterflies from the Gsr intake manifoldand run b16a1 injectors and ecu. It wont run as well though.
HTH
KJ
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P.B.Y.M.
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Don't bother giving me "rep", I won't return it and I think it is stupid.
Gracie Barra Clearwater
Gyms in Clearwater, St. Pete and Port Richey
pm me if you are interested in trying a free class at any of the gyms.