Fuel Cut-Out Eliminator (FCE) instructions

The Cut-Out Eliminator works by venting pressure from the line that runs from the manifold to the MAP sensor. By limiting the amount of pressure reaching the MAP sensor, the ECU is prevented from detecting a pressure level that forces it to shut down the engine. When properly adjusted, it does not affect the fuel mixture during normal driving. Extreme care must be taken when using this device, as mis-use can result in a lean condition and subsequent engine failure. It is suggested that this device be used in conjunction with an Air/Fuel Meter or EGT gauge, to monitor for lean conditions.

Begin by ensuring that the knob on the Eliminator is fully tightened (clockwise). Install the Eliminator in the vacuum line leading to the MAP sensor. The brown plastic barb connects to the vacuum line that comes from the manifold pressure source. The brass barb/tee attaches to the line leading to the MAP sensor.

The cut-out point can now be raised by rotating the adjustment knob counterclockwise ¼ turn at a time. After each adjustment, drive the car in a manner that normally causes high boost cut-out. If cut-out still occurs, repeat the process, adjusting just ¼ turn at a time until the cut-out is raised to a satisfactory level. Then tighten the adjustment knob clockwise ¼ turn, and repeat the process, backing off 1/16 of a turn at a time, until the cut-out is raised to the desired level. Now lock your adjustment in place by rotating the locking nut into place. Be patient with your adjustments. Rotating the adjustment knob too far will result in a damaging “lean” condition. Remember that the MAP sensor will not provide a signal for fuel enrichment past the original cut-out point. You must monitor your mixture to prevent engine damage.

The device should be cleaned every few weeks to ensure proper operation. Remove the assembly from the vehicle and disassemble the mechanism by rotating the adjustment knob fully counterclockwise. Use a Q-tip and rubbing alcohol to remove any residue. You can retain your adjustment by noting the position of the locking nut, before disassembly. Upon reassembly, ensure that the ball is seated in the end that is attached to the brass tee. Replace the spring next and screw in the adjustment knob. If you find that the internal parts remain clean during operation, then you may adjust the maintenance schedule accordingly.

If you experience hesitation on deceleration, mild acceleration, or get MAP sensor errors, try removing the brown plastic barb.

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