Stanley, I have enough hours in pistons aircraft to know that your flight sim leaning procedure is correct for most piston aircraft engines. I also had enough stressful moments in airplanes to know it's certainly not the most economic way to run the engines for fuel savings. I have no idea if it is a compromise for engine longevity versus maximum power though. I'd have to dig back into the books and do a little research. It's been a while. If I remember correctly it would give a slight rise in manifold pressure, or RPM on a constant speed prop so that does lead me to believe it is giving a fairly accurate measurement of increase power?

FYI, Innovate is bow shipping the DLG-1. For under $400 USD you could have a nice digital dual AFR/Lambda gauge in place of the clock, with two Bosch sensors, and the ability to log data should you have a use for it.

EGT's would be nice, but there's also the white paper towel method, used it today. Safer if the car's not moving. Hold it near the exhaust pipe, if it's too rich it will get a bunch of sooty spots. Lean out the mix until it's not doing that.

 

Tuning is a great game; there are so many variables, and so many definitions of "running perfect".

DLG -1 arrived. My clock doesn't work so I opted to use this location for this gauge for now. Doesn't exactly fit as well as I had hoped, but I did get it to fit in the clock housing after boring some holes for the harnesses to route through.

Preliminary testing seems to work pretty well, let the adjusting begin.