Edelbrock Pro-Tuner User's Guide download pdf (Page 9)

Catalog #3670, 3690, 3671, 3691, 3672, 3692, 3673, 3693

Rev. 10/07 - DC/mc

Brochure #63-3670Page 6 of 25

INJECTORS AND FUEL RAILS

INSTALLATION

1. Fasten fuel rail stands (if applicable) to manifold per Edelbrock instructions; making sure the stands are parallel with

the injector bosses in the manifold.

2. Lightly lubricate the O-rings at the top and bottom of each injector using the supplied Russell Precision Hose and

Fitting Assembly Lube.

3. Install the top of each injector into the fuel rail; carefully inserting the injector to avoid pinching or damaging the

sealing o-ring. Orient the injector so that the connector is facing outward (The outside of the rail has the Edelbrock

logo on the side).

4. Carefully insert the rail w/injectors into the manifold, insuring that each injector enters the manifold straight and

lower O-rings do not get pinched or damaged.

NOTE: If O-rings are damaged even slightly, they MUST be replaced before pressurizing the system!

5. Align mounting holes in rail with the rail mounts.

6. Install with hardware provided.

7. Remember to attach the coated injector harness J-clamps to each rail mount. Orient the clip so that it is above the

mounting hole.

SENSORS AND ACTUATORS

The Pro-Tuner system has been designed to work with specific components. They are

easily selectable through the Pro Tuner Setup Wizard. Substitution with other

components may cause running problems or system damage.

IDLE AIR CONTROL VALVE (IAC) (PWM Type)

The Idle Air Control (IAC) valve is controlled by the ECM and controls airflow to

help maintain a set point speed at idle. The behavior of the valve can be

calibrated for your combination through the laptop Pro Tuner software. The IAC

comes installed on the Edelbrock throttle body.

THROTTLE POSITION SENSOR (TPS)

The Throttle Position Sensor (TPS) comes installed on your throttle body and

should require no mechanical adjustment. Scaling of the sensor is accomplished

through the Setup Wizard. When replacing the sensor, the TPS scaling of the min

and max values should be recalibrated through the Setup Wizard. It is also a

good idea to reset the TPS Set Points in the Setup Wizard or from

the TOOLS menu a second time after the engine idle is tuned in and

your final throttle blade setting is reached

(See “TPS Set Points”.

Remember to cycle switched power after adjusting TPS Set Points)

OXYGEN SENSORS (O

)

The exhaust gas oxygen content is measured by the oxygen sensor. The sensor signals the ECU, which compensates when the

air/fuel mixture is either rich or lean. If the exhaust system is already configured for an oxygen sensor port, simply replace the

existing sensor with the Edelbrock sensor. Route and secure wires and connectors away from exhaust heat. Allow enough slack

for exhaust pipe movement.

If your exhaust system does not have an O

port, you will need to weld the included threaded bung into the exhaust pipe. It is

extremely important to make sure that your exhaust system is free of leaks. Leaks could cause false readings

that may damage the engine. It is recommended that the O

sensor installation be performed by a

professional muffler shop.

INSTALLATION

1. Double check header gaskets, replacing if necessary.

2. Drill a 5/8-inch hole in the driver-side exhaust pipe, 6” to 13” behind the collector flange.

NOTE: Before drilling, make sure the O2 sensor will be mounted at a slight downward angle in the top half

of the exhaust pipe and within reach of the harness connector. Check to insure adequate clearance for the

sensor, taking into consideration engine movement.

3. Fit the provided fitting into the hole in the exhaust pipe and weld into place.

4. Once it has been welded into place, clean the threads in the center of the fitting.

5. Thread the O2 sensor into the fitting. A high-heat anti-seize compound has been applied to the sensor threads.

NOTE: The O2 sensor has 18mm x 1.25 spark plug threads.

6. After the main harness is installed (See Main Wiring Harness and Engine Wiring Section), attach the O2 sensor to the

main system harness driver side connector.

NOTE: UNLEADED FUEL MUST BE USED ONCE THE O2 SENSOR HAS BEEN INSTALLED.

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Edelbrock Pro-Tuner User's Guide Page 9

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