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Your math is wrong (archive)
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Posted by LM on January 28, 2001 at 16:58:32:

In Reply to: I did 2 dyno runs before and after mods. posted by Black M5 on January 28, 2001 at 16:44:40:

To get crank HP, you need to divide by 0.85 not multiply by 1.15 (I'm using 15% because that's the norm).

Therefore 343 RWHP is 403HP (343/0.85). You can verify this by multiplying 0.85 by 403 = 342.55 (rounding error).

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