by Brian » Fri Feb 22, 2013 6:53 pm
In general, longer primaries better. Thus, between the Racing Beat and the RoadsterSport I would take the Roadstersport for its longer primaries (and no sensors sticking directly into the collector which is the MOST critical point for smooth flow). On the other hand, having those O2 connections in the collector is practical for some installations. I prefer moving the sensors to the midpipe and keeping the header collector clear.