Exhaust system having tunable exhaust sound

An exhaust system for a vehicle, the system having a tunable exhaust sound, the system comprising:

• a resonator having at least two expansion chambers and first and second exhaust conduits passing through said chambers, each of said conduits having a long axis, at least one of said conduits having a band of peripheral perforations, said band being at an angle relative to said long axis;
• first and second pipes for delivering exhaust gases to said first and second exhaust conduits respectively;
• first and second mufflers, at least one of said mufflers including an infinitely variable exhaust gas assembly;
• and
• first and second pipes for delivering exhaust gases from said first and second conduits to said first and second mufflers respectively, wherein said at least two expansion chambers includes a first expansion chamber and a second expansion chamber, said band of peripheral perforations being formed on one of said conduits is formed on said first conduit in said first expansion chamber, and wherein the other of said conduits includes a band of peripheral perforations formed in said second conduit in said first expansion chamber, said band formed on said second conduit being at an angle relative to said long axis.

A resonator for use in a tunable exhaust system for a vehicle, the resonator comprising:

• a housing defining an enclosure;
• first and second expansion chambers;
• and
• a first exhaust conduit having a long axis and a second exhaust conduit having a long axis, said conduits extending through said housing and said chambers, at least one of said conduits having a band of peripheral perforations, said band being at non-right angle relative to said long axis.

A muffler system for use in a tunable exhaust system, the system comprising:

• a housing having a first chamber defined by a front wall and a baffle and a second chamber defined by said baffle and a back wall;
• a single inlet pipe extending through said front wall and said baffle;
• outlet pipes extending from said first chamber through said back wall;
• and
• an infinitely variable flow assembly attached to one of said outlet pipes.