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Slip ons will give you the sound and some upgraded performance but true duals will add a lot more when used with a hi flow and race tuner. Yes ,worth the money.
I'll jump in and say that if you look at the rpm where your torque is peaking, its at about 3700 - as opposed to 3200 for a stock motor. Where did the bottom end go? Answer - you moved the torque peak up in the rpm range and lost bottom end......
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