GRT EIS 4000 Fuel Flow Issue

I have a GRT EIS 4000 and it uses PMW for Fuel Flow (Injectors). If I switch to a red cube, I will need to change the software. So, are there any good fuel flow devices that use injector fuel flow out there? Or am I going to have to change the software?

Installing a new IO-540 in an RV-10.

John

for 6 cylinders

won't you need the EIS 6000?

Like you, debating whether the $150 software addition is worth it.

O-320, EIS 4000 Mini-X

Bill,
You are right, but when mine boots up, it says it's a 4000/6000. The harness has plenty of CHT and EGT wires. I'm expecting to hear from them in a day or two.
I'm just wondering what I could do for fuel flow if I don't change it.

John