No but that's why they say the Homare 45-21/23s were downrated to only run at the exact same levels as the Homare 45-12s, and the follow-up engine in 1945 was being built in the worst possible conditions with bad results.
Almost no engine late in the war built in Japan was able to perform as intended. Even the J7W Shinden never made its full power and had major overheating problems on just the prototype. This isn't just a matter of fuel quality (which was generally low for them) but also of metal tolerances in construction, assembly, seals, lubricants, O-rings, etc... It only takes a single rod to bend or a gasket to blow and it ruins your day rather quickly.
Plus there's just flat out a lot of wrong or misleading info on some of that late-war stuff. See the US numbers being circulated as Ki-84 true performance as an example, vs actual war-time capabilities.
EDIT: That said, a Ki-27 or A5M Claude would be nice eventually for this game. Very limited for early early war planesets in CBI and such. Ki-43 plays the part much better.