Holley Projection 4 Complete w O2 Sensor & Harness eBay

Pro Jection. Holley **NEW IN BOX** ProJection 4D Marine 70053 for 4.3L Fuel Designed to replace original Holley components on the Pro-Jection systems (See figures 17-21 for dimensions and applications.) 8.0 PLANNING THE INSTALLATION Before starting the installation of the MPI PRO-JECTION system.

Without the restrictions of a conventional carburetor's venturis, Holley's 2-barrel Pro-jection unit flows 670 cfm The system will install on both square flange and spread bore intake manifolds

Holley® 534143 ProJection and Commander 950 Harness Kit

The new Holley fuel injection system is a bolt on system, replacing the fuel system completely It operates in either a closed loop system using an O2 sensor, or in an open loop system, depending on your specific needs.. A 10 micron screen filter located behind the pump insures.

Holley® 534147 ProJection and Commander 950 Harness Kit. The D unit comes with a calibration module for modifying the fuel maps The ECU then adjusts the fuel delivery to maintain a stoichiometric fuel delivery (14.7:1 Air / Fuel Ratio)

Holley® 534196 ProJection and Commander 950 Harness Kit. As in any fuel injection system, fuel is pumped from the tank to the throttle body It operates in either a closed loop system using an O2 sensor, or in an open loop system, depending on your specific needs..