First, I never installed a LH fuel system on a B18/B20. I have fuel injected my 122 that has a B21/M41 with Megasquirt (planning on pulling Megasquirt and setting up LH/EZK on it).

D-jet (it's stock to the B20) or Megasquirt (very flexible-it can be mixed and match with a bunch of stuff), would be the easiest (and it's been done).

I know this has been a discussion over on turbobricks before, but I don't think anybody has done it. TB has had some problems with their system, so the search function has been disabled to make the system run faster.

Would switching over be worth it? If you want a project, then yes, if you want it run better, maybe (I'm sure many would say no here)?

Using an LH (I would suggest LH2.2) on a B18/B20 would need most of the equipment from a D-jet system (intake, injectors, etc). A list would need to figured out of the parts required to run LH.

I see the problem with using LH from a 240 is the head mounted sensor, and the signal from the ignition to the fuel injection system.

I think you can either drill and tap a hole in the head or use a sensor tee in the radiator hose (Saab used them to run an electric fan).

I'm not sure what signal is needed from the ignition system. If you just need a tach signal, you can use the stock point setup (if the voltage from the coil is too high, maybe use a Bosch 139 ignition module to run the ignition, and use the tach pin to send it to the fuel system).

Paul