Originally Posted by badcoupe:
That would hurt the scavenging effects of the collector by running two 2-1 collectors to a pipe. The tri y configuration or 4-1 help scavenging of the exhaust gasses
I used to be an S&S Distributer, and that is what the gentleman told me , that owned the business, they had tried it in several versions and variations, and other than sound, the old 4-2-1 had the advantage. Bob