We believe DynoTune solenoids are the best solenoids available! Compare the features, Stainless construction, High power coils, powder coated housing, High flow, like a nos brand (super powershot)! The SuperPowershot/Cheater style solonoids use 1/8"npt inlet/outlet ports.
150 hp has a .078" orifice
250 hp has a .09" orifice
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