To achieve a very efficient engine target is 200+hp 200+ftlds @ as close to 40mpg. These are modern day production line and race car requirements.
Chemistry, Physics, and maths tells me what to expect.
I find enjoyment in advancing to the points which new algorithms are required.
I'm also liking seeing how far I can push the fuel, thermal, volumetric efficiency of this Toyota E series engine using the light weight not very safe ep91 platform.