How loud and how's performance
By Turk
Compared to like khrome werks
Answer QuestionAs far as loudness goes, it's difficult to say since none of the manufacturers provide sound output numbers. In terms of performance, a 2-into-1 exhaust is always going to perform better, when properly tuned, of course, than a 2-into-2 or 2-into-2 system with a crossover pipe, with everything else remaining the same.