Ad v ance rpm – Mallory Ignition Mallory HYFIRE VIIC CONTROL UNIT 674M User Manual
Page 4
4
MALLORY IS A DIVISION OF THE MR. GASKET PERFORMANCE GROUP
550 MALLORY WAY, CARSON CITY, NEVADA 89701
(775) 882-6600
FAX (775) 887-4326
www.mrgasket.com
FORM #1492
(REV. B) 9/00
Made in U.S.A.
Printed in U.S.A.
To nitrous stage 1 (+12 volts when active)
To nitrous stage 2 (+12 volts when active)
To nitrous stage 3 (+12 volts when active)
NC
N
NO
RPM2
RPM3
RET1
RET2
RET2
EXAMPLE 6: Using the high-speed timing retard function with a 3-stage nitrous system.
CUT-IN (Mode 9)
This is the RPM where the timing
starts to advance. This example
shows a cut-in of 7.0 (7000 RPM).
SLOPE (Mode 8)
This is how much the timing advances
for every 1000 RPM. This example shows
a slope of 2.0 (2 degrees per 1000 RPM).
MAXIMUM ADVANCE (Mode A)
This example shows a maximum of 2
degrees advance.
8
6
4
2
0
0
2000
4000
6000
8000
10k
AD
V
ANCE
RPM
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