I have a conversion kit for sale, this will convert your CA VX, or any other 92-95 Civic with a VX engine to a 5 wire wide band oxygen sensor. Average fuel eco. on my 94 VX CA was 46mpg (Yours may vary).
What comes with the kit:
1. 37820-P07-A00 Fed. 48 state ECU
2. Civic VX 5 wire oxygen sensor, pulled from a civic HX with 120k miles on it.
3. 5 wire harness, with all the pin outs labeled to install and tap into the ECU.
4. the EGR control units (all you need is the mount and cover, see link below).
Text if interested, or call 909-234-03five9