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Engine Management Systems

Preferred systems are featured here.  If we sell it, we can tune it and provide technical advice as well.
Holley EFI Smart Coil Sub-Harness

Holley EFI Smart Coil Sub-Harness

Save $17
Holley EFI Ford TFI Ignition Harness

Holley EFI Ford TFI Ignition Harness

Save $10
Holley EFI Input/Output Harness (J1A/B)

Holley EFI Input/Output Harness (J1A/B)

Save $21
Holley EFI 4V Modular Ford Harness Kit (1999-2004)

Holley EFI 4V Modular Ford Harness Kit (1999-2004)
Holley EFI 2V Modular Ford Harness Kit (1999-2004)

Holley EFI 2V Modular Ford Harness Kit (1999-2004)