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Discussion Starter · #1 ·
Hi guys,

im fairly new to this but unlike some others, Ive done some research before coming on here with questions, so dont give me "go search yourself" answer please!!.
If you are installing bigger bore pistons, do you need to do work on the head to avoid messing up the swirl effect that stock honda provides? Can you expect a 10% increase in power if you increase displacement by 10% (provided the manifold and headers are tuned for each case)? Anyone on here have results from increased bore???????
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