54
Vacuum Advance
An RPM-based timing curve is set on the Timing Setup screen. It is similar to mechanical advance on
a traditional distributor. The Vacuum Advance feature is similar to a vacuum canister on a traditional
distributor. It can add ignition advance based on manifold vacuum as read by the MAP sensor. This
feature is disabled when the throttle is closed to mimic a traditional ported vacuum arrangement. The
amount of advance that is added is greatest just off idle at low load / high manifold vacuum. Once past
an adjustable load / vacuum threshold, the extra advance tapers down to zero as the engine approaches
100% load / zero vacuum (full throttle conditions). At that point, timing will be solely based on the
RPM-based timing curve – no offsets from Vacuum Advance or Idle Trim.
Vacuum Advance ON
– Use this button to enable the Vacuum Advance feature. The button’s
LED is illuminated green when this feature is enabled.
Maximum Vacuum Advance
– The maximum ignition advance added just off idle.
Maximum Vacuum Threshold
– The breakpoint above which the added ignition advance will
begin tapering out. Load can be monitored live on the Master Dash to help fine tune this
setting.
Vacuum Advance Help
– This button brings up a help screen. Press the “Confirm” button on the
help screen to close it.
Idle Trim
Advancing or retarding ignition timing can make an engine want to speed up or slow down. The EZ-
EFI
®
can use this principal as another way (in addition to the idle motor) to maintain the desired idle
speed. Besides giving the ECU additional influence on engine speed, the Idle Trim feature can also
react very quickly. For both of these reasons, it is often a nice complement to the idle motor.
Idle Trim ON
- Use this button to enable the Idle Trim feature. The button’s LED is
illuminated green when this feature is enabled.
Maximum Idle Trim
– Sets the maximum number of degrees of timing the ECU can add or
Содержание 30400-KIT-EZ-EF
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