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i like discussions like this. a lot of us pointed out areas that needs elaboration before every gets "boost happy" on their cars.
first off, low compression is very ideal on turbo cars and it is also safer. theoretically, a low compression engine will handle more boost, meaning, more air volume can be forced in the combustion chamber.
on any force induced car, a higher octane gas is always ideal to allow better combustion efficiency.
what some researchers are developing is a way to combat low RPM band power lacking but maintaining an all out race car. in order to do this, they've compromised high compression+high boost. then tuned the shit out of it.
do not get me wrong, i'll still do what i have to do. if it's my money getting spent, i would definitely stay on a lower or mid compression engine such as B18B and B20z for turbo purposes. a b18c5 is just a risky issue to turbo. IMO
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