Posted May 11, 200718 yr Just wondering about my performance on a 06 R6 does anyone know if the performance would be better for a dual pipe or just a straight pipe custom made. I can build the exhaust myself but im not too sure if it would be such a good idea. Here are some ideas: 1) 4-2 system for a dual 2) 4-2-1 system for a straight or 3) 4-2 with a extra connector somewhere in the middle for another dual.
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