I installed an offroad h pipe and pony express performance mil eliminators on my 98. I soldered the mil eliminators in properly to the 02 sensor and drove around until my check engine light went off on its own. After about 1 week of the light being off, it came back on out of no where. Now, is it recomended to disconect the battery after initial install of mil eliminators to reset the computer or does the computer relearn on its own? what could the problem be here guys?