Cold Air Intake And Tune

[Exile918]

After I swapped my auto to manual trans on my 05gt we ran into some problem turned out the o2'sensors were reversed and once I took care of that the car was running really good... For about the first week and a half it seems. Since it's my daily driver I began driving a bit more "conservatively" and I'm wondering if that attributed to my car feeling sluggish now. I've been reading about adaptive learning on these cars and I'm wondering if that's what's behind that. I'm pretty sure there's nothing wrong mechanically as far as I can tell. But the performance seems to have sorta faded away. Is the cold air and tune the only remedy here? If so if I tune the car will it eventually feel sluggish if a drive it sorta fast here and there but also conservatively? Any thought???