ORIGINAL: lfinney

one of my tricks for good muffler performance is it to use the sf 46 muffler on the newer os engines its well optimized for max power, and is no too loud. has excellent throttle transition and mid throttle performance as well. i do prefer using a jett or nelson type for the simplest high output, the tower 46 muffler is loud and has very poor fuel consumption, it over scavenges badly.