"I would rather know the facts to the nth degree and then decide for myself how much error I am willing to live with."

My point ... stated clearly with less words. Thanks.

- Wil

Obviously, you two have not encountered the law of diminishing returns in your travels. Wil, I agree with your notion of the semantics of the subject and using the right instruments to interpret an event, but cheez........1% accuracy being mission critical for Porsche instrumentation?!

a bar is about 15 pounds. Geez ;)

It's not about being that accurate in actual measurement, it's about providing accurate information when a question is asked. The equipment required for measurement of that accuracy would be incredibly expensive. But, as Wil stated earlier, this will be read by someone now and maybe months or years later so don't you think it's important to be correct? To summarize, 99% accuracy in measurement is fine, 99% accuracy in your information is not.

The end user will need to determine the degree of PRECISION required for his own application. However, the poster ( me...others) will provide the proper degree of ACCURACY when asked "what is _______" ....for measurement.

Sure...a meter is "about a yard" for some work. But 36" aint a meter..and it wouldn't be accurate.

Why don't we simply all agree to give it a rest. The first three responses or so gave the answer. We got off-tangent when people started to post incorrect infomation "as true". That kept me engaged in reposting. Bad to keep in the archives this way.

- Wil

I'm almost afraid to ask, as I know there are many variables, but is their a way to quantify how much hp is equivalent to one pound of boost. I'm sure that this may vary depending on displacement and engine mods, but is there a general rule of thumb? And by the way, no antipathy for details, it just may not be practical given the broad nature of the question.

I'm almost afraid to reply.......
A general rule of thumb that has been used in turbocharging camps for a while now is for every .1 BAR increase, expect to see around 10+HP in engine output. And that is with no other variables changing in the equation........