[Fastest H-Town Realtor]

Ken-

Your right about the crank HP, but:

1-If crank HP is equal, and the s/c is drawing an approx. of 55hp at redline, the power needs to be made up for the parasitic loss. This is usually done thru increased boost. So if we figure 400 crank HP, the s/c drawing 50 of it, so the s/c'ed engine needs 450hp crank, then the 10%'ish increase of power needs to come from 2.5 psi additional boost. (1 psi = 4% hp increase)

2-Not alot of vehicles use crank hp for power reads in the aftermarket. This is usually done thru dyno reads (You knew this). So, the draw of the s/c is related to the rear wheels. same result as above.

Now that this has been blown to way beyond needed replies, (Ken) your knowledge of aircraft/Buick GN systems should make you quite aware of turbos upsides (and down) as you have shown. Your opinions should be noted by the threads author.

H2sin-your "turbo lag" comment makes me aware that your a bench racer with no practicle (Read: Hands on) knowledge of forced induction. Turbo lag has nothing to do with overall output, and is more about system design and turbo sizing, along with vehicle weight and gearing. Once you have actually designed and worked with/on either system, the knowledge gained will help your thought process.