Computech Systems RaceAir Pro - Mikuni Jets; Keihin Jets

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New Dia= 0.033 (Calculated new jet size)
Mikuni Jets.
Read the Tune-Up Information section before using this program. This program is designed to
accept Mikuni carburetor jet numbers. Use this program with the baseline tune up information to
predict the proper jet to use as the ADR changes.
Press the SAMPLE key and allow the weather analyzer to stabilize on the = Sampled Wthr =
screen. Press TUNE-UP then Jetting Menu then select Mikuni Jets to start this program.
Display Example:
== Mikuni Jet ==
Base ADR? 95.7 (Enter ADR from baseline tune up)
New ADR? 99.2 (Press IMPORT WEATHER DATA import ADR)
Base Jet? 150 (Press in baseline tune up jet size)
Adjust %? 0.0 (Enter tune up change, if needed. See TUNE-UP ADJUST,
page 17.)
New Jet= 155.3 (Calculated new jet size)
Keihin Jets.
Read the Tune-Up Information section before using this program. This program is designed to
accept Keihin carburetor jet numbers. Use this program with the baseline tune up information to
predict the proper jet to use as the ADR changes.
Press the SAMPLE key and allow the weather analyzer to stabilize on the = Sampled Wthr =
screen. Press TUNE-UP then Jetting Menu then select Keihin Jets to start this program.
Display Example:
== Keihin Jet ==
Base ADR? 95.7 (Enter ADR from baseline tune up)
New ADR? 99.2 (Press IMPORT WEATHER DATA to import ADR)
Base Jet? 150 (Press in baseline tune up jet size)
Adjust %? 0.0 (Enter tune up change, if needed. See TUNE-UP ADJUST,
page 17.)
New Jet= 152.6 (Calculated new jet size)
Fuel Injection Jets, Area Method.
Read the Tune-Up Information section before using this program. This program is designed to
work with mechanical fuel injection systems. The first time this program is used, all the engine
fuel nozzle sizes must be entered in the setup. When the setup is completed, the computer will
remember the total nozzle area for future calculations. This program and the Fuel Injection, High
Speed Bypass Adjust program use the same total nozzle area number from computer memory.
Use this program with the baseline tune up information to predict the proper jet to use as the ADR
changes.