needing help SOON!!

[mikey8865]

my buddy has a 2008 super duty spartan tuned and on every tune it does this...run and drove great no problems...except the occasional rev and slam like when goign around a corner...now u cna drive the truck around and no problems and u get on it runs fine expect 3rd gear...it will hold for a second then just revs out every other gear is fine any ideas??

[Fordaholic]

I would contact spartan for their tcm module it is suppose to perfect the shifts. I have a manual but thats wat i hear from my buddy running the spartan tcm module. It shifts very smoothly for him no problems.