Krusty, The aviation history online museum stated that Max HP for the BMW 801 as used in the FW-190A-8 is 1,700 H.P. the DB605, as used in the 109G series, is rated at 1,475. The 601 is more like 1,150. Plus, Due to ME-109, Me-110, and other applications, the supply of DB engines were already strained.