Hmmm... well, a surprisingly poor tank this last time... only
44.0mpg. I expected I'd get better than that after switching over to the Fed ECU on the VX. Not sure what caused the drop; there are a couple of possibilities:
- The installation of the Fed ECU either caused or exposed a problem which results in a very high idle cold and a higher than normal idle at warm temps.
- The weather absolutely sucked this last tank, with rain, snow, and very cold temps nearly every day I drove.
I will probably look at swapping the Cali ECU back in this coming weekend (without swapping the LAF sensor) to see if I can narrow down the high idle problem. This should be OK to do as I had read that some (all?) of the '92 Cali Civic VXs already had the 5-wire wide band L1H1 O2 sensor along with the Cali ECU... In theory, the '94 with 5-wire sensor and Cali ECU should work the same as a '92 with 5-wire sensor and Cali ECU.
Haven't had a chance to get the parts needed for the OBD1 to OBD1 jumper cable yet... Possibly might do that this weekend too.