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Message: <blockquote data-quote="Terrorist 5.0" data-source="post: 1540301" data-attributes="member: 30689">It's been a while since the battery was last disconnected on my car, and today I unhooked it for about an hour to clear my IAT code (54), and after I reconnected it, I went for a drive and the car felt very different. I understand this is normal, but in hopes of learning more for the future, if there are any people experienced with these cars please answer me this.A little background, I realize all these cars, whether 5.0 or 4.6, are known for hanging revs between shifts. Before I disconnected the battery, the revs would not hang that much, and would drop nicely when I pushed the clutch in. For reference in day to day traffic I normally shift at anywhere from 1500-2000. Now it holds the revs noticeably longer than before, especially when driving slow AND ESPECIALLY ON HILLS (it has always done it on hills but I am planning something to combat that at some point). On top of this, I found taking off to feel different too, nearly stalling a couple times and not being as smooth as I was before unhooking the battery. I should mention however that the car is running 8* of timing (planning to back down to 6 and go back to running on regular) on about a 50/50 blend of regular and midgrade to combat a pinging problem at WOT I am actively looking for.Also, when I reconnected the battery, I let the car relearn it's idle. Started it cold, let it run for 2 minutes, shut it off, let it sit for 2 minutes, then ran it for 2 minutes with headlights, A/C and steering input for load.Before it shifted nice, now I am considering one of those IAC restrictors lolI just want to know how long the car is going to act the way it is being before it goes back to normal. I know all cars are different, and I just want to see if these cars have any secrets I am missing. Thanks.</blockquote>