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nope. it will help power, but i mean, going with dual 4" would kill torque... 3" isnt TOO bad but loses i think 3 or 4? so i hear anyways, 2.5 is perfect
i was just curious, since there would be less backpreasure. When you say it would change the torque curve, does that mean i i would really have to rev higher to get the power (but more power)?