[KirkEvil]

I have read *claims* of 8-10 hp for FRA and 3-5 for TB bypass. Data shading? TB bypass keeps the TB from reaching the coolant temperature, but it will still absorb radiant heat from the engine (lesser evil). Both are methods of cooling inlet air, so it really depends on ambient air of the surroundings and circulation. Realistically, I would say you net more mental satisfaction than hp.