A different lower compression number

CobraSix

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I didn't want to hijack my own thread...so new one...

All the talk about lowering the compression for forced air (thanks for all the good input) lead me to the compression calculator on falcon performance. When I go from my 9.5:1 to 7.5:1, I go from 127HP to 87HP. So my question is this. How accurate is that algorithm to calculate relative engine performance?

It got me thinking, because if I lose 30-40 HP, just to gain another 6 psi of boost, it almost is a wash on the performance gain.

Slade
 
No, because it doesn't work that way. Lowering the compression allows you to stuff more air into the engine. You may lose power due to the compression loss, but the added 6 psi will make that up PLUS roughly another 50% to boot.
 
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