Quote:
Originally Posted by sly
Simplest way to reset the memory, if you don't have a scan tool, is to disconnect the battery for 15 minutes and then re-connect. If the O2 is leaking, it could make the system overly rich by possibly pulling in extra air. The ecu would see this as lean and then try to richen up the mixture, possibly to the point of misfire. But I would start simple first and try to clear out ecu memory by disconnecting the battery.
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But that would show misfires on the oft stage 1 91 tune too right? I actually disconnected both my neg/pos terminals for 45 minutes before I flashed to the oft tune to see if there are any misfires which there weren't. But when I flashed back to stock again, the previous misfire readings were still on the car.
This is the confusing part, because to my understanding every time you "erase flash memory" and write a new tune, everything should start from scratch. So this is causing me to believe something may be corrupted with my stock file?