Well, in good VAF fashion I'm gonna vouch against changing from carb to FI, unless you really use the only real benefit as in inverted flying... and even then, remember that an RVx ain't a dedicated aerobatic machine, but just an aerobatic capable ship. Asymmetrical airfoil and being made outta aluminum, a material of finite repetitive bending, it is just good enough for the occasional Sunday fun flying
I ordered a new engine for my steed, and had a long look at converting my carbed A1A to either a mechanical FI, or EFI.
It would:
A/ be a costly exercise
B/ involve quite some work (not only the EDP, but also the new installation of a single or dual hi P pumps, etc, etc)
C/ be heavier
D/ offer only a minute increase in engine efficiency aka LOP FF, as the key is dual EI and not injection
E/ due to complexity be more susceptible to problems such as blocked injector, etc
F/ eventual hot start worries, at least until you get what your very engine is asking for
G/ permit inverted flying of short duration, or longer if equipped with an appropriate oil system
Looking at this list, my new engine will be again carb equipped, as the only real benefit, inverted flight, doesn't outweigh the cons. Yes, YMMW, but I hope this recap be of some help.