Hey guys.....i just got a magnaflow muffler(14468), stainless pipes,and tips installed on my 2004 L.....driving home it felt alittle sluggish...louder but sluggish....will the computer reset itself for the new exhaust????..or should i reset it????going to get a 6lb pulley.. cai and a tuner on Saturday..will the dyno tuning set things straight??????..thanks guys :rockon: :rockon: