Every electronic set up has a pre-determined "dwell" for firing the cylinder. It's often confused with the older point type dwell readings where that only referred to the dwell on the points. Typical "dwell" on the electronic stuff is 20 deg for 8 cyl, 60-70 deg for 6 cyl, and 80 for 4 cyl. Remeber, they are selling the "burn" time during crankshaft rotation for piston travel benefit.