"I've been having major oil consumption problems with my 360 ever since my prop strike, and subsequent engine overhaul, two years ago."
"They blame my set-up (electronic fuel injection and electronic ignition) and are refusing the honor the warranty or run it with the existing set-up."

Matt, you might want to take a look at  http://www.ellison-fluid-systems.com/products/injectors.htm

The Ellison throttle body is a fairly cheap bolt-on carb ( actually more like a single point injector ) for your fwd. facing sump. It is fed directly from a std. engine driven fuel pump ( diaphragm type, 5 psi ) with a std. Facet pump as backup for TKOF and LDG. Your filter setup might still work, but you will need carb heat and mixture control.
No, I am not married with Ellison Fluid Systems, but I bought  an EFS 4-5 for my own 360. Haven´t flown it yet, tho...........

With all this said I still have a hard time believing, that your electronic ignition and fuel injection has anything to do with a high oil consumption but, then again, I never was the shapest knife in the drawer............  In fact, it sounds like 100% bullsh*t to me. Unless, ofcourse, your seemingly unreliable ingition system fired a tad early causing a total piston melt-down.......  :-)

I, for one, sure would get a second opinion from someone who is not economically involved with the high oil consumption and who has the guts to fire up your engine with the existing setup!

Regards
Tim Jorgensen
360MKIIFB  /  60%