higher compression ratio means you need higher octane to resist pinging "detonation"
compression is nice, but volume is where the power is,
you can compress 1 cubic inch of air fuel into a 14-1 ratio and it will give ,
X amount of power given you have the right fuel to resist detonation.
but when you supercharge you cram 1.5 cubic inches of air fuel into the same area more power per cubic inch .
now lower the compression and you can cram 2 cubic inches of the flamables into the chamber more fuel air more power.
a gas engine will run on as little as 4-1 compression .
you take the chamber volume and the piston hight , it gives you a definite volume of air call itKaboom now raise the compression now you have less room forKaboom so less Kaboom =
less power ,
now lower the compression and you can fit more of the famed
Kaboom into the chamber making more power x amount of Kaboom makes x amount of power more room for Kaboom more power to be made.