Haltech E8 - Manual (Page 101)

Haltech E11/E8 Instruction Manual
Cranking Map
The ignition timing is taken from this map when the RPM is less than the value of the Max Cranking RPM
parameter. See main setup section. If the timing is set too low, the engine will be difficult to start. If it is set
too high, you may experience “back cranking” where an early ignition will cause the motor to stop
cranking. Back cranking can cause damage to starter motors and the associated mechanism. Use
extreme caution when raising the cranking ignition advance.
Figure 105 - Ignition Cranking Map
Use a conservative advance until the cold starting fuel requirements are well tuned.
Rotary Engine Ignition Split Map
Common rotary engines run two spark plugs per rotor to ensure complete combustion in the relatively long
combustion chamber. The primary aim of the trailing plug is to reduce emissions, but some minor power
gains can be had from properly timing the trailing spark. The Rotary Engine Ignition Split Map allows you
to program a split angle between when the leading spark is fired to when the corresponding trailing spark
fires.
Copyright © Haltech 2008 Page: 101
Ignition
Split
(Height)
Load
(Bars)
RPM
(Ranges)