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I fully understand that a bigger turbo will flow more air, no question. The thing is, pressure in the manifold is pressure. One would think two turbos providing the same pressure, one big, one small, would produce the same power because the manifold pressure is the same, however this is obviously not true. I believe its that the larger turbo does not have to spin as fast and work as hard to produce the same pressure, is more efficient, and produces less heat. Less heat = cooler temperatures, and ultimately, denser air. More air = more power, like you said. I find it hard to beleive that the difference in temperatures is what causes the dramatic HP increase, but 12psi from a smaller turbo is the same pressure as 12psi from a larger turbo. The only difference is temperature, because if it were staying the same temp, and flowing more air, PSI would be higher at the same HP. pv=nrt, to illustrate my point. p = pressure, v = volume, n = moles, r = constant, t = temperature (Sorry, not sure if your familiar with chemistry). Pressure is kept the same, well say, at 12psi. Manifold volume does not change. N, moles of air obviously increases, or else it wouldnt be making more power, which we know to be true. R is constant, therefore the only thing left is for temperature to drop, to keep the equation balanced. Agree? Disagree? Thoughts?
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