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there is a question that has puzzled me for some time. for the sake of argument, accept for a moment that aftermarket bolt-on performance part power gain claims are true. (i don't accept that assertion, but that is a whole other discussion.) aren't some of those claimed horsepower gains overlapping? in other words, i don't believe the effect can possibly be cumulative.

don't you have to consider the system as a whole? so, optimizing the flow on an engine can gain, say, 10 horsepower. that's an absolute. a cold air intake can't free up those 10 horsepower and headers free up 10 *more*. it doesn't make any sense. am i just looking at this wrong?

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there is a question that has puzzled me for some time. for the sake of argument, accept for a moment that aftermarket bolt-on performance part power gain claims are true. (i don't accept that assertion, but that is a whole other discussion.) aren't some of those claimed horsepower gains overlapping? in other words, i don't believe the effect can possibly be cumulative.

don't you have to consider the system as a whole? so, optimizing the flow on an engine can gain, say, 10 horsepower. that's an absolute. a cold air intake can't free up those 10 horsepower and headers free up 10 *more*. it doesn't make any sense. am i just looking at this wrong?

vick57,

+1 on Loren's comments on his blog!! Well worth the read and I share his sensiments!!

Demosan ....if something is too good to be true it probably is............ WITHOUT STATISTICALLY CONCLUSIVE FACTS :soapbox:

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ok. i read loren's blog and i totally agree with the "prove it" demand. but, even statistically verifiable results for a single product can be misleading in a broader context of multiple aftermarket products.

i guess i'm beating a dead horse though. :)

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