MoTeC M880 - Manual (Page 33)

MoTeC Installation 31
Coil per plug
One coil for each spark plug, fired sequentially.
Double Ended Wasted Spark
Double ended coils have two high tension towers and fire two plugs at
the same time, one on the compression stroke and the other on the
exhaust stroke. Each coil is fired sequentially twice per engine cycle
and must feed the appropriate two cylinders.
Ignition System Wiring & Setup
The wiring and setup parameters are specific to the particular ignition system.
Refer to the appropriate MoTeC Ignition System or Ignition Module drawing.
Distributor Button Alignment
If using a distributor, the button must be aligned so that it is leaving the tower
at Top Dead Centre for that cylinder.
Button Rotation
Button just leaving tower at TDC
The button must be a wide tip type to cater for a wide range of advance points
since the advance is changed electronically rather than mechanically.
Make sure that the button still overlaps the tower at the maximum advance
point.
The distributor should have no mechanical or vacuum advance as this is
provided by the ECU.
Spark Plug Leads
The spark plug leads should be high quality Inductive Suppression leads such
as Magnicor® leads and must be in good condition.
Do not use wire leads as they can cause interference.