my idle is really gay sumtime when i pull up to a light it will be at 15-1600 rpms other times its at 1000 other times its at 200-300 its just soo weird most of the time its really low ..... i had my timing retarted should i put it back to stock

i had it retarted for nitrous but now the nitrous is out should i put the timing back wil that help my idle???

 

 

set the base timing on your car, check for vacuum leaks. if still having the same problem then clean your iac, then fitv.