Though the Ford EEC-IV mass-air SEFI system is very adaptable, in stock form it cannot make the substantial changes necessary to provide the optimum air/fuel ratio for a 400hp engine such as ours.

The 1986-1993 Ford Mustang’s EEC-IV has the capability to manually test for codes. Not just that, but you can also check the Continuous Memory codes that are stored in the system.

A 10mm bolt retains the EEC IV to the harness. Remove the EEC IV from the harness now as well, but don't forget to disconnect the battery first.

Few all-original fuel-injected 5.0-liter V-8 Mustangs survive today, making this no-reserve Mecum lot all the more fantastic.

The rear quarter windows were retained, as were the original front and rear bumpers, taillights, alloy wheels, AM radio and Ford EEC-IV engine management system. He added to that a fibreglass hood ...

The 1986-1993 Ford Mustang's EEC-IV has the capability to manually test for codes. Not just that, but you can also check the Continuous Memory codes that are stored in the system.