It’s a fact that I can’t leave well enough alone. That being said, I have decided it would be a great and challenging project to convert my ‘72 Mach 1 from carburation to fuel injection. This page will document my supposed progress towards said goal.
Intro
I’ve had my ‘72 Mach 1 since 2000 and in that time have rebuilt the engine, upgraded the transmission and generally made the car drivable from it’s previous state of non-runningness. EFI’ing this car will get me more involved in tuning on the older processors found in the foxbodied Mustangs and will also be huge in teaching me more about the PCM in the cars. My goal is to plan the entire build, purchase everything upfront and then in the span of a month install, tune and complete the swap.
Phase 1: Planning
Perhaps the most important (and intense) part of the whole gig, the planning of the entire swap. I have found several people that have done the swap (although none on a car like mine) and one company that also specialize in this sort of swap. That being said, I have some good resources to pull from in my quest of a computer controlled car.
I’ve started out by purchasing an A9L computer, wiring harnesses and MAF meter from a ‘89 Mustang for the princely sum of $194.50 shipped. This will be the largest expense of the whole project, but definitely not the last. I have a lot of items I have taken off of my ‘95 that I will reuse where applicable to save money.
Shopping List
A9L PCM & Wiring Harness- eBay: $194.5019lb Injectors- Already have: FreeUpper/Lower Intake- Already have: FreeMAF- Already have: FreeIntake tubing & air filter- Already have: FreeSensors: O2s, IAC, TPS, ECT, ACT, PCV- Already have: FreeChip to disable EGR, Smog, firing order, etc.- Already have: Free- BAP sensor
- Three 30A relays
- Distributor (cast iron gear), cap/rotor (88-91 F150)
- TFI Module
2 O2 bungs, welded in exhaust - Summit Racing: $6.95/perCoil- Already have: Free94/95 throttle cable- eBay: $20.0094/95 throttle cable bracket- eBay: $8.2594/95 fuel rails & regulator- Mustang Forum: $50Inline GSL392 (255lph) fuel pump- eBay: $119.99Fuel pump wiring- AutoZone: $19.99- Inline fuel filter & fittings
25ft Nylon fuel line- McMaster-Carr $20EGR blockoff plate- Summit Racing: $3.95Fuel pump blockoff plate- Summit Racing: $3.95- Pre-formed heater tubes
- Possibly 3g alternator and wiring
- Possibly late-model starter and wiring
Photo Gallery
Here is a photo gallery of the parts I’ve bought and the buildup.
Resources
Here are some links I have found especially helpful in planning the swap.
