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May I have the honors? So you want shorter "gears" (Shift more often/quicker) and more torque/acceleration, right? Go UP in teeth on the REAR sprocket and not the front. I'd never change the front sprocket unless you're looking to make a drastic change, going down 1 tooth on the front is about the same as going up 3-4 teeth on the rear. Here's a neat little calculator that will give you all sorts of numbers. http://www.sprocketcalculator.com/
May I have the honors?
So you want shorter "gears" (Shift more often/quicker) and more torque/acceleration, right? Go UP in teeth on the REAR sprocket and not the front. I'd never change the front sprocket unless you're looking to make a drastic change, going down 1 tooth on the front is about the same as going up 3-4 teeth on the rear. Here's a neat little calculator that will give you all sorts of numbers.
http://www.sprocketcalculator.com/