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    • Bryan Bosch

      JUST IN!   04/24/2018

      HOW TO: 4-STROKE PISTON REPLACEMENT DONE RIGHT!

TopDeadCenter

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About TopDeadCenter

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  1. RHC quietly hit on the truth. Having owned 450e, 525e, from 03 to 05 I can say without a doubt that the late 03 525 was by far more powerful than an 05 sx. The horespower does change model to model quite a bit. 55 hp from the 03 525sx jetted correctly with stock exhuast is a very realistic figure. Likewise an early 03 450e is probably more like 40 horsepower. I will not get into dyno arguments. Suffice to say that engine temp, fuel temp, and dyno operator are enough to get different readings on the same dyno on the same day. I agree that the newest port configs are not capable of "correctly" pumping enough air to make more than 50 hp unless it is nearly useless...