Exhaust system service required/def system service required.

Hello,

I recently bought my 14' RAM 2500. It has a
bullydog GT gauge tuner in it. Upon purchasing it
the bullydog was in the truck but not plugged in.
The truck has a full exhaust system on it and the
def system has been deleted.

Today I decided to plug the tuner in and install the
download to see what it could do. After the
download was complete my truck started throwing
the check engine light and prompting exhaust
system needs serviced.

It also has more of a lope and baffle than the
smooth sound it had when not plugged in.

I immediately uninstalled the download per bully
dog instructions to get my truck back to normal.
After uninstallation the trucks check engine light is
still on, it still prompts the exhaust system
maintenance required, and has the lope and baffle
sound.

Please let me know what I can do to get it back to
normal.

Basically it registers now that the def system
wasn't deleted and it is. How do I get it to not throw
these codes? I've uninstalled the bullydog tuner
and the truck is back to stock.