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Discussion Starter #1
I have heard so many different opinions on this subject. If I am running 533 RWHP and 456 RWTQ what is the calculated FWHP or BHP?

Thanks,

Kurt
 

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Add 13-15 % to get fwhp
 

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Since dynos vary widely, I think the most accurate way is to know your base line with that particular dyno. Then use that parasitic loss factor with your later readings to give you an idea of what you are now making at the crank.

Say you dyno stock at 355 rwhp &rwt

355/405 = .877

Say you dyno with mods at 390 rwhp, delta of 35.
Your crank numbers are ~ 390/.877 = 444.7 rwhp.

What was your stock base line on that same dyno? 02 and later are 405 crank hp.

Just blindly using 12% to 15% can give you some incorrect numbers.
390/.85 = 459
390/.88 = 443

Use the same dyno on the base line and post mods that will give you a chance to determine your crank hp.


SPRFAST said:
I have heard so many different opinions on this subject. If I am running 533 RWHP and 456 RWTQ what is the calculated FWHP or BHP?

Thanks,

Kurt
 

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Discussion Starter #4
I see what your getting at. My base line dyno, with only Vararam was 369.9 RWHP and 351 RWTQ. Easy to figure out now.

Thanks,

Kurt
 

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SPRFAST said:
I see what your getting at. My base line dyno, with only Vararam was 369.9 RWHP and 351 RWTQ. Easy to figure out now.

Thanks,

Kurt
LOL, that's what i dynoed with zip-tie/KN filter mod - almsot free mod in comparison :cheers:

but yea "Add 13-15 % to get fwhp"
 
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