cold starting

Hey all. quick question, i have a friend with a 2006 pontiac torrent. installed is a 2 way compustar with a fortin passlock sl2 for a bypass. Seems everything works perfectly, with the exception that when it gets cold, the truck cranks but will not fire up. I am thinking either the bypass module or the tach setting may have to be re-learned. just wondering if someone has come across this situation before,

  Any advice or tips would be appreciated

for those vehicles, i deal withcompustar alot.

program the tach in settings for optimal tach level, but program tach when engine is cold, it wont over crank

another problem can be bypass. the passlock sl2 is a hardwire bypass, no halo.