Outdated graphics and weather engine compared to modern sims.
Detailed performance charts for various engine types can be reviewed at Ethan's RV-7 Specs Pilot & Builder Forums Van's Air Force fsx bts vans rv 7 7a better
Both versions share the same high-performance DNA that Van's Aircraft is famous for: FSX Vans RV-7 (BayTower Studio) Livery Pack Outdated graphics and weather engine compared to modern sims