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Hdpi 150, 175, 200

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  • Hdpi 150, 175, 200

    I noticed that the Yahama HDPI 150, 175, and 200 all have the same bore and stroke. What is the difference that provides the extral HP and can a 150 be tuned to get it?

  • #2
    That would be mapping, pulse width, timing, those are all 2.6 litre blocks, and that would be negative, not cost effective to convert.. drive train is different as well..

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    • #3
      If you are trying to stretch 200 HP out of the same block wouldn't that be detrimental to the engine life?

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