I have an Electronics International UBG16 in my Carbon Cub EX and have the CC O-340 engine. With the UBG16 I have fuel flow and manifold pressure modules. I'm wondering if anyone has developed a desired fuel flow rate for various RPM's and manifold pressures? For example (and this is just an unverified number) at 2400 RPM and 24" of manifold pressure a fuel flow of 8.0 gph would mean the engine is leaned correctly.

I developed a chart like this using an EI UBG16 in a fuel injected engine with a constant speed prop and use it for leaning all of the time. This particular engine has GAMI injectors and I run lean-of-peak with it but the principle is the same other than the prop being a constant speed. This engine has been run about 1500 hours using this technique.

Using manifold pressure takes care of altitude changes.