ruined a perfectly good day by failing my smog test. i had the O/R pipe on for around 3 years, with the diablosport tune and mil. had the factory pipe installed, and retored the factory tune. i checked to see if there were any codes last night, and it said there was one for OBD test imcomplete. so then on the way to the smog station my engine light came on and the code description said my computer failed to communicate with the rear bank sensors. so i cleared the code(with the diablosport) and pulled into the smog station. i passed everything on the test, emmissions, gas cap, etc...but i failed because the "computer had no memory". the form says that i failed due to incomplete MIL/OBD test. but if i drive it long enough the chech engine light will come on and i'll fail again. any ideas? did i burn out my O2 sensors? thanks guys.