Thats cause you are not a rocket scientist like all of us nerds....

 

LOLOL. As a total side note I used to play World of Warcraft (speaking of nerds) with a dude who went by FuzzyDucky. I already figured out you 2 aren't the same person, but it made me giggle.

Anyway I thought I would add some more to the head-hurting quotient of this thread, because some further research has cleared up something I was confused about. Namely I was confused about how the volumetric efficiency of an engine is measured. We already talked about how volumetric flow rate is kind of a loosey-goosey way to measure air flow, since a set volume of air can contain a radically different MASS of air depending on its density (which is dictated by pressure and temperature). So it kinda seemed to me that for volumetric efficiency to mean anything useful, it would have to be measured at some sort of standard condition. Well, looks like that's right. Here is a good web page on the subject:
http://www.epi-eng.com/ET-VolEff.htm

The very-short version is that volumetric efficiency is measured as a ratio of SCFM (which means cubic feet per minute at standard temperature and pressure) that an engine will move at ideal conditions to the amount it actually moves at a given RPM, engine temp, manifold pressure, what have you. SCFM is an interesting measure since, because it's taken under standard conditions, it is really a measure of mass flow rate not volumetric flow rate.

Here's the kicker: bigger turbos flow more SCFM. They do not (necessarily) flow more CFM. Which is what we have been saying all along, only we've been saying they flow more mass of air as opposed to volume. Same diff. It seems some people got confused and I think were probably throwing around the term CFM when they meant SCFM.

Now let me confuse everyone (including myself) to a hopeless degree: according to what I have read, no one agrees on the "standard" conditions under which to measure SCFM. So one man's VE may not match another's (although if you look at a VE curve, it should look the same, just the scale might be different).

So in conclusion: get a larger turbo. You will go faster.