i'm running a jdm b16a in a 99 em1.
really need to keep it obd2 using the p2t ecu.
i was throwing a code 54, which was the CKF Sensor.
i did the CKF bypass trick following this:

http://technet.ff-squad.com/ckftrick.htm

now i'm getting a code 9, cyp sensor..
this code did not come on until after i did the bypass.

for those who are going to ask, yes i've tried using an obd1 ecu with an adapting harness.
jdm p30 ecu, the car idles very crappy and runs overall worse than with the obd2 p2t throwing the ckf code 54 or cyp code 9.

please post only helpful responses..thanks.