Originally posted by mangler:
Bret, if you don't like the above statement as proof, ages ago someone posted the approved Ford relearn routine, which is about a page long. Of course, I don't have a link for you. Maybe someone else?
i have a hard copy of that routine, if you need it scanned i can do it tomorrow at work. i also HIGHLY doubt anyone who has claimed "reseting" the computer has gone through the proper "learning" procedure. Yet they still post they only found gains after they "reset" the pcm. If you don't do the proper break-in procedure the pcm "learns" the new mods the same way it would had you not reset it to begin with. I personally don't even think the car has to learn these little mods, and the more involved mods usally require a dyno tune or a custom pcm/chip. Like i said, if you can show me some hard data that proves that reseting the pcm actually does something for these mods, then i will gladly eat my words. But a simple 1-3hp intake mod is not going to require a reset of the pcm. The pcm monitors the values in as close to "real time" as it can get, so if you allow more air to get in, it will see that and adjust. just like if you restrict air, it will see that and adjust. This whole "lagged" theory just doesn't make sense. I think the real reason for doing a pcm reset is drivability issues caused by software error... but don't quote me on that.
