I have been working with dynos for over 20 years now for tuning on full scale cars/engines... And nearly if not 10 years with my X-dyno on these small scale nitro engines. And I agree the dyno is a tool for R&D on these engines and a tuning for full scale engines PERIOD....That's why i haven't worried about changing how my dyno reads. I like that it reads low and ill explain why.

A dyno that reads lower takes more hp/tq percentage increase to raise the output number the dyno spits out. So therefore you have to make a larger % increase on a dyno that reads lower to see larger numbers. I hope that makes sense... im on little sleep today so bare with me folks.