Sorry, but I'm not aware of any formula to calculate what your "equivalent" compression ratio would be. I'd like to know that myself.
It probably wouldn't incorporate boost in the equation, but rather the volume of air that the blower/turbo puts out(ie cfm). Boost pressure can vary depending on the amount of restriction of the intake,heads, etc.
Also, it would have to be a pretty complex equation. The volume of air that the blower puts out rises with RPM, so, in effect, your "compression" ratio would be variable.
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91 coupe
3.73's,long tubes,2 1/2" exh,ported stock t-body,ProM-77mm
cobra intake,edelbrock heads,B303,1.72 rr's
36lb inj's,tremec, & a Paxton NOVI 2000!!!
11.020 @128.95 on BFG Drag Radials (275/60/15)
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