Vortech 1991-1995 5.2L/5.9L Dakota/Ram User Manual
Page 19
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13. IGNITION/BOOST CONTROL UNIT OPERATION
A. The Ignition/Boost Control unit
is designed to retard ignition in
relation to boost.
B. The unit is adjustable from 0
°
of
ignition retard to 4
°
of ignition retard
for each pound of boost, up to a
maximum of 20
°
C. Using the middle position (knob
pointing straight up) as a starting
place, adjust the ignition retard
knob until just beyond the point of
detonation. Use third gear for testing
in a safe area or road. Adjust the
retard according to changes in
altitude and fuel quality.
Caution: It is extremely
important that the boost
retard never be turned to 0
°
using pump fuel. It is
recommended that in stock
street applications, the knob
be at no less than 1
°
/lb.
15
10
5
5 7 10
[5 psi at 3
°
per per lb.]
[7 psi at 2
°
per per lb.]
[10 psi at 1/2
°
per per lb.]
psi Boost
Degrees of Retard
Maximum Retard = 15
°
13
Example
Maximum Retard = 20
°