Maybe I'm not looking at this right .....from my understanding the 88mm will be at 11lbs at around 7k rpm and would be just over make for the supercharger........and the 84mm is 14 lbs at the same point and even overspinning more .....so a 82mm would be like 17lbs at 7k and way above max range of supercharger .....I realize you are getting boost sooner in the rpm range but should be limited on how high you can run the engine rpm without risk of blowing supercharger/motor ......also if you don't rev to the upper limits of the rpm range would torque be lost even at a higher boost ?
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