Problems when put original tune back in.

[GLP1977]

I have a 2005 Ram, I had a performance tune on there for a couple of years. I'm selling the truck and decided to put the original tune back in. Now my truck won't up shift to 2nd at WOT, the rev limiter is at 5800. If I just modify the stock tune, to up the rev limiter does that mean I can't sell the truck and predator seperatly? Or is there a way to up the rev limiter with out the predator?

[mikel]

try pulling the tcm fuse or disconnect the battery for a minute...