1,700 PS (1,677 hp, 1,250 kW) at take-off by improving the supercharger and raising the compression ratio . Because of these changes, the A-3 model required a higher- octane fuel —100 (C3) versus 87 (B4). The A-3 retained the same weaponry as the A-2. The A-3 also introduced the Umrüst-Bausätze factory conversion sets. The