QUOTE(rozz_1291 @ Oct 13 2010, 10:54 PM)
Pls avoid using those so-called swirling bullets. To me its bullsheet. The whole point of putting a center bullet/box/resonator is to resonate the sound and vibration cause from the cylinder detonation. It acts more like a sponge or dampener around the piping.
Those swirling dimples inside the bullet will cause more restriction to ur exhaust gases flow compare to stock setup.
I would recommend u to use back ur stock size piping+mandrel bend tuned length extractor+bullet/resonator (if u 1 it to be more silence) and a suitable rear muffler (inlet<2", outlet<3") maybe??? Following ur liking.
using back stock piping is to keep the heat inside the piping for a better and smoother flow (unless ur running on Fi)
sifu !!!! Those swirling dimples inside the bullet will cause more restriction to ur exhaust gases flow compare to stock setup.
I would recommend u to use back ur stock size piping+mandrel bend tuned length extractor+bullet/resonator (if u 1 it to be more silence) and a suitable rear muffler (inlet<2", outlet<3") maybe??? Following ur liking.
using back stock piping is to keep the heat inside the piping for a better and smoother flow (unless ur running on Fi)
Oct 13 2010, 11:08 PM

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