I have seen alot of people saying that you have to drop your comression ratio way down when doing a turbo setup... From research I have found this untrue, correct me if I am wrong. I am building a LSblockC1headTurbo and have been doing alot of research. It seems the only thing that higher compression ratio is going to do in a turbo setup is cause knocking in your firing chamber due to gas self-exploding prematurely during the compression cycle. But would raising your octane significantly, say to 98-100 range completely eliminate the knocking due to the fuel now being able to handle a much higher compression and allow you to go high compresion and hihg PSI together? Yes it's expensive to fuel 100 octane on a regular basis, but for a drag car as apposed to a daily driver would it not be worth it? I thought this belonged in Engine Buildup category moreso for the fact that is my calculations prove correct, this could be an excellent thing to think of when building an engine. Imagine 15PSI 10:1Comp and Vtec working together. Oorah.