Banks Power Chevy_GMC Trucks: Diesel ’93 - 96 6.5L Power Systems- Stinger System '93-early '94 (non-cat) Pickups w_ factory turbo option - Manual (Page 6)

Your Banks Stinger will allow your GM 6.5L factory turbocharged
engine to produce more power and respond quicker well within the
safe operating range of the engine as long as the following guide-
lines are adhered to.
Use your pyrometer (exhaust temperature gauge) and boost gauge
to monitor your engine’s operation. At idle, EGT (exhaust gas temper-
ature) will be very low, perhaps only 150°F. As the throttle is opened
for higher speeds and greater loads, the EGT will rise. The highest
EGT will be seen under maximum load at full throttle, such as climbing
a steep grade with a heavily laden vehicle. Use caution if your EGT
approaches 1000°F, with 1050°F being the SAFE MAXIMUM!
If the vehicle approaches these EGT levels under these condi-
tions, downshift the vehicle to reduce the load, or back off the
throttle. If frequent high EGT levels are encountered, the fuel
delivery of the injection pump will have to be reduced by back-
ing out the Allen head screw in the injection pump as indicated in
the PUMP ADJUSTMENT section.
Exhaust gas temperature in this system is measured “after” the tur-
bocharger in the turbine outlet pipe, as is commonly done on long-
haul diesel trucks.
Your boost gauge monitors the air pressure the turbo compressor is
delivering to the intake manifold. The Banks Stinger is designed to
provide a maximum boost pressure of approximately 12 PSI. This is
an average maximum figure which will vary from engine to engine.
This maximum figure will be reached only under hard
acceleration/heavy load conditions. Light cruise conditions may
show little or no boost.
If your exhaust gas temperature is consistently well below the 1050°F
safe maximum under full load conditions (steep uphill towing with
maximum load), you may obtain additional performance through an
adjustment of the fuel injection pump to provide greater fuel delivery.
If the EGT wants to exceed 1050°F, the fuel delivery must be reduced.
The pump adjustment is made by turning an internal Allen screw,
found within the pump. Be sure to adjust the pump with the engine and
pump cold. In most cases, turning the screw 30° (one half flat of the
Allen wrench) clockwise will bring the EGT into the proper range if
the EGT is low. Keep in mind that increasing the fuel delivery will also
increase the smoke output of the engine. Some states, such as
California, have a 40% maximum smoke opacity limit during a snap
throttle test. Check the emissions regulations in your state before
altering the injection pump setting.
The pump adjustment can easily be set with the pump on the vehicle. If
the condition of the pump is in question, or if the pump is to be
removed from the vehicle, GALE BANKS ENGINEERING can provide
the addresses and phone numbers of qualified Association of Diesel
Specialists (ADS) pump service shops.
P.N. 96299 6
AIR DUCT REMOVAL
FIGURE 5
OPERATING CHARACTERISTICS INJECTION PUMP ADJUSTMENT