Holley 02121NOS - Manual (Page 5)

These kits have been designed for safety and smoothness of operation. Nitrous oxide is injected into the engine only when the
following conditions are met:
‰ Bottle valve is opened.
‰ System is armed.
‰ Engine is at wide-open throttle.
‰ RPM conditions are met.
Horsepower and torque increases due to these kits will vary with engine displacement and modifications. Approximate power
increase estimates can be made based upon the massflow of nitrous oxide into the engine. The following table is provided to
allow you to estimate the power increase you can expect for your application. NOS strongly suggests that an upper limit of
about 40% to 50% increase in power output from your stock engine. Exceeding this can result in premature engine failure.
Table 1 Jetting Combinations @ 43 PSI Fuel Pressure
Kit Nitrous/Fuel
Jetting
Approximate Power
Increase (BHP)
02121NOS 20/16
36/30
50 HP
75 HP
Driveability, fuel economy, and exhaust emissions should not be affected under normal (part throttle) conditions.
1.2 System Requirements
When used correctly, these kits will work with stock internal engine components. To ensure proper performance and engine
life, the following is an absolute must:
‰ Manual Transmissions
If the vehicle is to be exposed to severe operating conditions, such as drag strip usage, the standard clutch should be replaced
with a high performance unit.
‰ Automatic Transmissions
If the vehicle is to be exposed to severe operating conditions, such as drag strip usage, a reputable high-performance
transmission shop should service the automatic transmission.
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