Settting timing_reseting ECU 2001 sentra se pp

[Jonathan Pfeiffer]

Hi I recently advanced the timing to 19btdc on my gf;s 2001 sentra se pp, I
also disconnected the batery overnight..Now the the check engine light is
on and the car revs funny..I would assume the ECU takes a bit to relearn.Is
this normal and how long will this happen thanks..Please respond as soon as
I need to get this car on the road again today.
Thanks in advance.

Jon
92 se-r
gf's 2001 se pp