I've had excellent results with my JPI fuel computer. Unless you are
leaking gas (something the fuel gauge may clue you into) it should work
great. I am able to take trips deep into Mexico that I would not have
felt comfortable doing without the fuel computer. I measure my fuel
before and after every flight. I've never had the computer be off by
more the 0.1 gals.
There is only a universe if you are looking at it. If you are not
looking at it, whether or not there is a universe is undefined.

-Robert