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Megasquirt fuel injection

From 1981 Ford LTD “TractionLTD” — documented by police351.

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1981 Ford LTD - Display for the Tech Edge wide band O2. 1981 Ford LTD - Big ol pile of fuel injection parts. This isn't all of it either. Takes a bunch of little bits to do things. 1981 Ford LTD - Assembling the Megasquirt. Lots of soldering. 1981 Ford LTD - Mostly done. Had a bit of trouble getting the laptop to talk to the ECM but I got it figured out. 1981 Ford LTD - Made a bracket to hold the intake flat for boring the injector holes. Simple 45 degree plate bolts to the intake flange and bolts to the dr… 1981 Ford LTD - Welded lug supports the intake port. I bored a hole under this so the bit wouldn't ride down the flange and screw up the hole. 1981 Ford LTD - Boring the injector bung holes. I used normal water to lubricate the bit so there wasn't any oil to soak into the aluminum and contaminate… 1981 Ford LTD - Boring another hole. Setup worked just fine. 1981 Ford LTD - The more angled holes rode a little so I had to ream them later but it wasn't much of an issue. 1981 Ford LTD - Eight holes all drilled. Just need to make a quick fixture to hold the bungs properly. 1981 Ford LTD - Driver's side bungs welded. 1981 Ford LTD - Passenger side bungs welded. 1981 Ford LTD - Fuel rail mockup. 1981 Ford LTD - Bungs ground flush inside intake runners. 1981 Ford LTD - Intake bolted down and rails on checking for clearance. 1981 Ford LTD - Another shot of the intake and rails. Turns out the rails clear but not the fittings. Had to melt a little of the wiper box away but nothin… 1981 Ford LTD - Custom chisel I made to fix the slight bulge the welder left in on bung. 1981 Ford LTD - Megasquirt bolted up behind the glove box. 1981 Ford LTD - View of the ECM from the passenger foot well. 1981 Ford LTD - Aluminum panel for fuse and relay blocks. 1981 Ford LTD - Electrical distribution center. 1981 Ford LTD - Working on the wiring. I have the main relay and fuel pump relay half wired in this picture. You can see the wiring diagram I created (base… 1981 Ford LTD - Most of the fuel injection wiring harness installed. Took a long time but I tracked down factory connectors and terminals for every thing.… 1981 Ford LTD - Pulled the entire harness out of the car to wrap it up. The whole thing pretty much pops out as a single harness. All the wires terminate i… 1981 Ford LTD - The harness fully wrapped in wire loom. Mostly high-temp split loom but there is some high-temp braided loom in there too. The high-temp st… 1981 Ford LTD - Laying out the rails to hold the injectors for welding. 3/4" extruded aluminum square tube. 1981 Ford LTD - The tuning software running on the laptop talks to the ECM and the ECM talks to the sensors. I calibrated the TPS right after this but ever… 1981 Ford LTD - Harness installed on the car. It hides pretty well. I was going for an OEM fit and finish and I think it looks pretty close. 1981 Ford LTD - View from the driver's side. 1981 Ford LTD - Better lighting. Short pieces of 1/2" threaded rod hold each bung and allow me to adjust the bung height pretty precisely. Had to make… 1981 Ford LTD - Everything bolted down and ready to go to the welder.Nothing moved much during welding so I suppose the fixture worked well. I still have t… 1981 Ford LTD - The lower nuts holding the bungs had to be ground down to 3/4" diameter to fit through the holes with the bungs. I ground flats on the…