11
Jumper for
Low Advance
this plug into the receptacle and secure with the anchor screws on
each end.
•
3 lead coil plug to should be
DISCONNECTED
so the plugs cannot
fire during these setup procedures.
•
MAP
Sensor
tube.
•
Spark Plug Leads - with sparks plugs installed in the engine (or
plugs grounded to engine case).
Variable Timing Limit
:
The ignition will use engine rpm and manifold pressure to calculate the firing angle
over a range of operating conditions. There are two preprogrammed curves that can
be called up by the operator by use of a jumper between thermals #2 and #3. The
standard High advance curve will allow timing to
advance as much as 39 degrees. The low
advance curve will allow timing to advance as
much as 34 degrees.
•
High Advance
(up to 39 degrees) -
NO
jumper.
•
Low Advance
(up to 34 degrees) -
WITH
jumper.
Note 1: E-MAG has NOT tested the myriad of
fuel and engine configurations, and cannot
prescribe which setting is appropriate for a given
situation. In general, builders with high
compression engines or those experimenting with auto fuels might want to use the
low advance setting.
Note 2: Terminals #2 and #3 are an RS232 connection that will enable a number of
enhanced communication and control features. Watch for future announcements.
Index Ignition Timing
:
1.
Rotate your prop to the engine TDC (or TC) timing mark.
Note 1: It does
not matter whether the engine is on the compression or exhaust stroke for
a particular cylinder. Note 2: On some engines, “TC” is stamped on the
ring gear, which aligns with a reference alignment hole on the starter. On
others, a ring gear mark is lined up with the engine case seem. Consult
you engine manual on how to locate TDC.
2.
Setup mode is entered by turning 12 volt buss power ON, while the p-lead
switch is OFF (grounded). In setup mode the LED indicator (located at
the base of the coil) will light continuous RED. Turn the drive gear with
your fingers slowly until you see the LED turn GREEN. You will be looking
for a single (very precise) point in the ignition’s rotation, so turn the gear
slowly. The GREEN LED signals the ignition’s internal crank angle
