It is recommended for max performance that you upgrade your exhaust. Mopar will obviously tell you that optimal performance would be through a MOPAR exhaust, duh lol. Other than that, it is always good to change plugs and wires reguardless of if you have S1 or not. If cash won't allow some nice iridiums at the moment make sure to gap your stock plugs to about .040. Other than that...you'll need premuim fuel and new tires in a couple weeks [8)]
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