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I would change WOT 1-2 @ 4900, 2-3 @ 5000 and 3-4 @ 4800. All my shift firmness is @ +4 but feel varies by truck. I also run 91 octane with timimg +1 degree.
IMO, just do the Gotts mod (and a dryflow air filter if you must). I just have the Gotts mod now and a WIX filter, as my AEM dryflow let ice crystals in and put me in limp mode. Not a good feeling at all.