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[Czech-it-Out Graphics]

pretty much what he said...think of it this way, when you buy an aftermarket cooling head, the ideal thing to do is tune your motor with the stock head, then throw on the bigger head and see what the temps are. And retune from to get a little more heat into the motor for more performance the same goes for the fuel, but im sure you'd wanna lean er' out after you run the 30% it just runs cooler. OTher than that dont go messing with your settings to an extreme level so that your motor needs retuning.