Definetly want to get an cold air intake for my es but i was also thinkin about a full system magnaflow exhaust. I dont think an exhaust will really give any power but my dad thinks otherwise. I have a honda 4 wheeler that i got brand new so we put a full system on that and actually made a notice difference in power so idk if its worth the money if im not gonna get power. The stock exhaust on the es sounds great anyway. Let me kno what you guys think.