kay guys well i kno i havent posted on this forum much because i had a 4 tec and sold it after 2 weeks. now that some troubles there. but now i had the itch for nitro and picked upa nitro rs4 rtr 3. well now i want a lil more power out of this one speed kinda slow nitro. what kind of muffler would be good? and what other modifications would you guys think is good? thanks