Here is a low cost fuel flow meter from Tracy Crook that should work
with just about any engine using four electronic injectors.
With minor modifications it can be used with any number of injectors.
I redid (cosmetically) Tracy's original schematic somewhat.
With his permission I will post it on the ACRE NL web site.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org