User Manual
ADJUSTING YOUR IGNITION TIMING TO PROPER SPECIFICATIONS
1. Start your engine and then press the TIMING and VAC ADV keys.
The Timing Computer displays the number of degrees BTDC ignition timing.
2. Use the
⇑
and
⇓
keys to select one of the engine timing marks as a value.
Your Timing Computer will use this fixed ignition timing, regardless of
engine speed or other inputs.
3. Make fine adjustments to your trigger input, with a Timing Light,
so it matches the value on the Timing Computer’s display.
4. Return the display to Control Mode by pressing the TIMING button twice.
REV-LIMITING WITH THE
TIMING COMPUTER
our ACCEL+ ignition has the final say in rev-limiting, but there are ways you can use
he Timing Computer to rev-limit at a lower engine speed than what has been set in the
gnition box. One way is to retard timing by 10°–15° at your chosen engine speed, as
hown on Page 7. Another way is program a rev-limit with the Accel Timing Computer.
1. Press the RPM and VAC ADV keys to get into Programming Mode.
The current value for rev-limit will display.
2. Use the
⇑
and
⇓
keys to adjust this value in 100 RPM increments.
(
Note: Your ACCEL+ ignition rev-limits in 250 RPM increments.)
3. Press the RPM button twice, to return to Control Mode, and then press SAVE.
CONFIGURING WITHOUT A MAP SENSOR
lthough we do recommend a MAP Sensor, you can operate without one. For best results
se Magnetic Triggering, or a Points Distributor with mechanical advance locked out.
o not adjust or remove the Vacuum Advance mechanism on the distributor.
1. Program your Base Timing Curve as described on Pg 6.
2. Set VAC ADV and B
OOST RETARD both to 0°.
3. Press SAVE to store all new values.
USING THE DISPLAY AS A DIGITAL TACHOMETER
ou can make your Timing Computer display engine RPM by simultaneously pressing
oth the
RPM and TIMING keys. It will continue displaying as a digital tachometer until
ou enter Programming Mode. When you exit from Programming Mode the LED’s will
nce again display engine timing.
RESTORING THE FACTORY DEFAULT SETTING
ou may decide, for one reason or another (such as replacing a major engine component)
o restore the Timing Computer’s original Factory Defaults. To restore Factory Defaults:
1. Turn the power OFF.
2. Press and hold down SAVE and BOOST RETARD and apply the power.
When the display reads 12300 release both keys.
FACTORY SETTINGS: a default timing curve, no adjustment for additional inputs,
RPM Activated Switch-1 set at 4,500
RPM, Switch-2 set at 6,500RPM,
no rev-limit, Cylinders = 8, Trigger Position set to 36° BTDC.