dependent upon the accuracy of the speed signal. If the vehicle has non-stock
sized wheels or the rear axel ratio has been changed, and the vehicle’s speed
sensor has not been recalibrated or the PCM reflashed accordingly, the
accuracy of these measurements will be effected. Another way of stating this
is that if your speedometer is inaccurate, so will be these measurements. In
addition, wheel spin will effect 1/8 and ¼ mile e.t.’s, giving inaccurately
lower times.
o) STATISTICS. This menu option, once selected, will display the results of
the previous performance measurement run. Only the last run will be stored,
and the data overwritten once another run is made. Make a note of this data if
it is needed for permanent reference.
p) ANNUNCIATOR/SHIFT LIGHTS. This selection will allow you to enter
an RPM value that once reached will turn on the bright LED shift lights. Or,
you can choose any previously selected parameter to monitor and once an
entered threshold is reached activate these lights. The only exceptions are
fuel economy (MPG) or consumption, and injector duty cycle. These are
calculations that require more than one parameter to determine and will not
work in the compare algorithm. First you will select the parameter you wish
to monitor, including the analog inputs. Once selected you’ll enter a 4 digit
value, starting from left to right. Hitting the right button will cause the digit
above the cursor to change from 1-9. Only positive whole numbers (no
decimals) can be entered. Once the correct digit is entered, hit the left button
and repeat until all 4 digits are correct. After entering the last digit you will
select “above” or “below” depending on if you want the warning light to
activate above or below the set point you entered. Once selected you will go
back to the main menu. The higher the “data rate”, the more accurate the
warning light will be. This is especially true if using them as a shift light.
Because of the nature of some data buses, you may see a false, occasional
blink of these lights when driving with the light activated. This is due to an
erroneous parameter signal received by the gauge. These will be infrequent
and random, and are not an indication of a faulty gauge. To activate the
annunciator function you must then activate in as shown below. If the list of
parameters is changed in Setup, the annunciator parameter should also be
reset.
q) ANNUNCIATOR ON. Select this to activate the annunciator function you
set up as described above. When the gauge first powers up it will indicate the
status of the annunciator (“on” or “off”).
r) ANNUNCIATOR OFF. Select this to disable the annunciator function.
s) HORSEPOWER ADJUSTMENT. This choice allows you to enter a
correction factor for the horsepower parameter and the MPG parameter.
This one correction factor applies to both. These parameters are available on
those cars using a factory Mass Air Flow sensor. Net horsepower and fuel
mileage can be closely calculated by knowing the mass air flow value.
However, since each car is slightly different in efficiency, this calculation can
be adjusted if the exact peak hp is known after being run on a dyno, or the
MPG reading needs adjustment. For example, if the gauge indicates 300 hp,
and the net hp (not rear wheel hp) is determined to be 315, you can enter a
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