Check the named application. This is a general Ford appendix and may describe vehicles other than Mustang. Model and year tables take precedence over the collection filename. Any emissions standards are historical source material.
HFM-SFI
Hot Film Engine Management SFI
HIC
Hot Idle Compensator
HIM
Heated Intake Manifold
HO
High Output
HO2S
Heated Oxygen Sensor
HP
High Performance
HP
Horsepower
HPCA
Housing Pressure Cold Advance
HSC
High Swirl Combustion
"I"
IAC
Idle Air Control Valve
IACV-SW
IACV Switch
ICOM
Idle Compensator
IDI
Original technical text and illustrations, formatted as HTML. Follow the engine, transmission, equipment, model and year specified in the source. Import and layout checks do not establish applicability to every 2015–2017 Mustang. About this collection.