EFI or Blowthrough?
apart from the xfi 2.0 what else is needed to complete the change over to efi.
ps love your build man.
There is some added expense beyond the kit, you can save a lot of money buy doing some of it yourself vs buying parts.
You will need all the sensors, you can get them from a parts store (pretty common GM or Ford Sensors), or buy the FAST sensor kit. You need a Coolant Temp Sensor, Air Temp Sensor, MAP Sensor (You will need at least a 3 Bar for the boost you were running), and Throttle Position Sensor. You can go either way on the Idle Air Control motor.
You can either buy an efi intake manifold or build one out of yours. I used a Mopar M1, drilled and welded in bungs. Bought some fuel rail stock, drilled, tapped etc. Also need to drill and tap a the water jacket for the Coolant temp sensor. MAP sensor will be on the manifold side of the butterflies, Air temp just before throttle body, and Throttle Position on throttle body shaft. Idle Air is usually on the throttle body as well.
Injectors, I used 800 CC high impedance, sized for E85.
Fuel pump will have to make at least 45 psi, with a regulated return. Lots of options here, an inline A1000, intake pump, surge tank, multiple pumps, etc...
A throttle body, mine is a 4150 mount like a carb, but I think a modern large bore single butterfly would be great for a turbo car.
Last is the timing: You can buy a dual sensor distributor with phase-able rotor from FAST which seems like a nice unit. Some guys use a crank trigger, I just used a Mopar magnetic pickup distributor. This is just a cam sensor to trigger the computer. You have to eliminate the vacuum and mechanical advance. I removed the vacuum can and welded the weights. The timing needs to be set about 50 degrees advanced with the rotor phased at about 20-25 degrees. I was able to use the vacuum advance to phase the rotor position and locked it down with a screw.
If you can swing the investment, it is a fun journey.
