How much do i retard the timing with a 125 shot using a MSD DIS-2 ignition??

Before I had this car I had money.

NOSnitrous.com has a chart that tells how much you should retard by the size of the shot. I would just use it as an estimate, I'm sure it probably varies by car.
Jesse

CAR SOLD
New ride 03 red SRT-4

at 5000Ft. On the blue talon, i ran a 100 shot TB Wet with no ignition changes. i would probably retard it 3-5 degree's if you do 125 at sea level