How can I increase horsepower without buying a new motor?
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Yamah 25ELHX
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carbs,props, reeds.
pull the block apart and alter port timing, stuuf the crankcase.
\lots of ways to cheat the system.
however at the end of the day for the displacement of the engine, without NO2 or positive pressure, your gonna get about 4-7 HP for a bunch of coin.
simply enjoy your motor or sell it and buy a larger one.
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