Quote:
Originally Posted by thumbster
The only way for the ECM to detect sensor baselines is with a complete reset. Fuel trims will adapt to a certain extent, but sensor baselines dictate fuel trims and change when you mod. After I installed my catback I notice the engine rpms would flare up excessively at cold startup - not until a full year later when I yanked my battery terminals for doing the air intake mods the rpm flare up fixed itself. Also, there are certain mods that will trigger a CEL if you don't disconnect the battery. I know from several people who installed CAIs (airaid in particular) on their Tundras and had a CEL - this fixed itself after resetting the ECM via the battery disconnect. One guy drove around with his CEL on (MAF code) and was stubbornly insisting it will fix itself from driving it. His mileage went down to 12 mpg and the truck ran poorly, so he finally decided to disconnect the battery and it was all taken care of.
So guys, don't be lazy - disconnect your battery after every airflow related mod you do!
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Thanks man! I knew you will say this things for someone has insist of what they know even we know what we know. Huh! what did I just said....
