Chip install and P1634 trouble code

[7.3Lifted]

Hello guys,

I've had my truck for a few months and was running fine with the super chip I have. However, I had a few problems with the truck dying on me and then not starting right up after. I decided to remove the chip, and noticed the truck runs properly without it (so I assumed the chip was causing the problems). However, I miss the power that my truck has with the chip. When I put the chip back in, the wait to start light does not come on, and I have a P1634 trouble code.

Now that I have some time off from school next week, I will have time to try to solve this problem.

Does anybody have any ideas?

Thanks