Banks Power Ford Trucks: (Diesel ’94 - 97 7.3L Power Stroke) Power Systems- PowerPack, Stinger-Plus & Stinger '94-98 4

observe operation of the boost
and pyrometer gauges while
driving under varying conditions.
turbocharger boost pressure
fluctuates as a function of load and
rpm. the engine produces lower
boost while cruising at light throttle.
Maximum boost occurs while
climbing hills and heavily loaded
during acceleration. note the boost
level during hard acceleration with
a given load. if future performance
declines, the maximum boost figures
may be compared to see if boost
has decreased. lower boost can be
caused by turbo ducting leaks, a
malfunctioning fuel injection system,
or dirty air filter. Maximum boost
pressure settings for the Power
Stroke turbo-diesel vary considerably,
due to manual or automatic
transmission options, vehicle year
and model, and altitude. Boost
readings may vary between 15 and
22 psi.
NOTE: Vehicle performance may be
erratic and improper if the module
connections are not properly
cleaned.
use your pyrometer gauge to monitor
exhaust gas temperature (EGT) in the
engine. At idle, EGT will be very low,
perhaps only 300°F. As the engine
accelerates and is under load, the
EGT rises. The safe maximum for
the EGT is 1050°F. The highest EGT
occurs under maximum load at full
throttle, such as climbing a steep
grade with a heavily laden vehicle. if
the vehicle reaches maximum EGT
during these conditions, downshift
to reduce the load, or back off the
throttle.
CAUTION: Exceeding 1100°F can
cause engine damage.
we recommend that engine oil
temperature not exceed 250°F.
optimum oil temperature is around
230°F.
NOTE: An optional oil temperature
gauge is available from Gale Banks
Engineering.
SERvICE TIPS
if the need should arise for you to
have your vehicle serviced, the Banks
ottomind should be removed from
the engine control unit (eCu). it is
common for the service provider to
connect a computer diagnostic link
to the vehicle regardless of the type
of service being performed. when the
ottoMind is installed, the computer
will return a code that indicates a
memory fault with the vehicle eCu.
the suggested repair for a fault of
this type is replacement of the eCu.
the operation of the ottomind is
such that the computer is directed
to reference certain information in
the ottomind rather than the eCu.
Therefore, the memory fault that
occurs is not an EcU failure, but
rather the presence of an electronic
device that the diagnostic computer
cannot identify.
to avoid confusion about whether or
not an EcU is properly functioning,
simply remove the ottomind from
the eCu before having the vehicle
serviced, and reinsert the plastic cap
in the eCu access port. the ottomind
can be easily accessed from inside
the truck by removing three 13
mm hex nuts from the emergency
brake assembly and pulling the
assembly away from the side panel
of the vehicle. the ottomind may
be reinstalled after the service
is complete. Be sure to reinstall
with duct tape to firmly retain the
ottomind.
it is also not uncommon for a service
provider to update the program in
the vehicle EcU. If this occurs, it is
possible that the programming in
the ottomind will no longer match
the EcU program. If you experience
any difficulty with the operation of
the Banks ottoMind after service,
check with the service provider
to determine if an update was
performed. then contact customer
service at Gale Banks engineering for
an updated ottoMind, if necessary.
-EnD, SEcTIon 7-
Section 7
CHECKING ENGINE PERFORMANCE
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