50
th
Anniversary
Ford Mustang Cobra Jet
Official Owners Manual
Techline 1-800-367-3788
Page 7
In order to calculate the Revs/Mile you need to measure the Rollout Distance (in inches)
of the rear tires. This is the distance traveled per revolution of the tire; mark a line on the
tire sidewall and ground with chalk, then push the vehicle until the mark has moved one
revolution. This measured distance is the Rollout Distance.
Revs/Mile = 63360/Rollout Distance (in inches)
Idle Speed Adder
This will adjust your idle RPM. Positive values will result in higher idle speeds and
negative values will result in lower idle speeds. The default value is: 0 rpm.
Stoichiometric Air/Fuel Ratio
Stoichiometric air/fuel ratio based on the fuel type. Note that this is a fuel property. It is
NOT the air/fuel ratio at wide open throttle. The default value is: 14.82
WOT Fuel Adder
This will adjust the fuel table at wide open throttle. This is a lambda value; positive
values will result in leaner air/fuel ratios and negative values will result in richer air/fuel
ratios. The default value is: 0 lambda.
Spark Adder
This will adjust the timing table in the PCM. Positive values will advance and negative
values will retard. The default value is: 0 degrees. Changes to this parameter will impact
effectiveness of the launch tables.
ATTENTION!
This value should only be matched to the specific fuel used.
Changing this value will significantly affect the fueling strategy. Any
fuel other than VP C16 may cause severe damage to your engine.
Use extreme caution.
CAUTION!
Use of the WOT Fuel Adder feature may damage your engine.
CAUTION!
Use of the Spark Adder feature may damage your engine.