Individual Cylinder Knock Control for Distributor Ignition
Two Rev Limits (Staging and Top End)
Cranking Retard: Knob allows up to 20° retard. Re-advances one dgree per spark event.
Nitrous Retard: Knob allows up to 20° retard when activated by 12v.
Boost Retard/Vacuum Advance with Start and Rate control
Individual Cylinder Knock Retard
High Energy Inductive ignition with variable dwell
Knock sensor sensitivity adjust
Triggers from points, OEM electronic, magnetic pickup, Hall effect.
Can trigger MSD or other CDI box
How it works:
The system makes a spark, then decides if there was knock. If knock is detected, software "knows" it had to come from the cylinder that just fired, and that cylinder won't fire again for two revolutons.
When that cylinder comes up to fire the next time, software dials in the calculated amount of knock retard. It does this as each cylinder goes by, building up a different timing curve for each cylinder if knock is detected.
The unit retards in steps, a total of ten steps are possible. Each step is one or two degrees, depending on a user mode switch. When knock is detected, software retards in proportion to knock intensity.
The unit responds to inaudible knock, and retards quickly enough to prevent knock from becoming audible. The re-advance rate is one step every twenty revolutions. Note that the unit will not advance beyond stock timing. Of course, you may choose to bump the timing a bit after installing the unit.