Method and apparatus for converting a vehicle from a dual-in, single-out exhaust system to a dual-in, dual-out exhaust system

1. An exhaust pulse balance chamber comprising:

(a) a proximal end and a distal end;

(b) a circular collar at the proximal end of the exhaust pulse balance chamber;

(c) a mid-section;

(d) one and only one skirt; and

(e) a right leg and a left leg;

wherein the circular collar is configured to connect to an outlet end of a factory Y-pipe;

wherein the mid-section has an inner diameter;

wherein the circular collar has a constant inner diameter that is smaller than the inner diameter of the mid-section at a central lateral axis of the mid-section;

wherein the mid-section is configured to form a bulge between the circular collar and the skirt;

wherein the mid-section has an outer diameter;

wherein the outer diameter of the mid-section increases from the proximal end of the mid-section to the central lateral axis of the mid-section and decreases from the central lateral axis of the mid-section to the distal end of the mid-section;

wherein the distal end of the mid-section is joined to a proximal end of the skirt;

wherein the skirt has an outer diameter;

wherein the circular collar has an outer diameter, and the proximal end of the mid-section has an outer diameter that is approximately equal to the outer diameter of the circular collar;

wherein the distal end of the mid-section has an outer diameter that is approximately equal to the outer diameter of the skirt at the proximal end of the skirt;

wherein the inner diameter of the circular collar is approximately equal to the outer diameter of the skirt measured front-to-back at the proximal end of the skirt;

wherein the outer diameter of the skirt increases in a left-to-right direction without increasing in a front-to-back direction from the proximal end of the skirt to a distal end of the skirt;

wherein the distal end of the skirt is configured to receive the right and left legs;

wherein each of the right and left legs has a proximal end;

wherein the proximal end of each of the right and left legs extends from the distal end of the skirt at a first 30-degree angle relative to a central longitudinal axis of the exhaust pulse balance chamber for a first distance;

wherein each of the right and left legs bends at a second 30-degree angle after the first distance and then extends for a second distance;

wherein the right and left legs are parallel to each other for the second distance;

wherein the exhaust pulse balance chamber is sealed to an exterior environment except at the proximal end of the circular collar and the distal ends of the right and left legs; and

wherein the circular collar, mid-section, skirt and right and left legs are all within fluid communications with one another.

2. The exhaust pulse balance chamber of claim 1 , wherein the mid-section and the skirt are formed form a single piece of metal that is welded to the circular collar and to the right and left legs.

3. The exhaust pulse balance chamber of claim 1 , wherein the outer diameter of the mid-section at the distal end of the mid-section equals the inner diameter of the mid-section at the proximal end of the mid-section.

4. The exhaust pulse balance chamber of claim 1 , wherein the skirt extends over and around the proximal ends of the right and left legs.

5. The exhaust pulse balance chamber of claim 1 , wherein the circular collar has an outer diameter that is constant; and

wherein the outer diameter of the skirt measured front-to-back is less than the outer diameter of the circular collar.

6. The exhaust pulse balance chamber of claim 1 , wherein the outer diameter of the skirt measured right-to-left at a distal end of the skirt is approximately two times the outer diameter of the skirt measured front-to-back at a distal end of the skirt.

7. The exhaust pulse balance chamber of claim 1 , wherein the first distance is approximately equal to one-third of the second distance.

8. The exhaust pulse balance chamber of claim 1 , wherein each of the right and left legs has a length; and

wherein the length of each of the right and left legs is approximately three times a length of the circular collar, the mid-section and the skirt combined.

9. A method of converting a vehicle from a dual-in, single-out exhaust system to a dual-in, dual-out exhaust system, the vehicle comprising a factory muffler assembly and a chassis, the method comprising the steps of:

(a) cutting a factory tailpipe behind an outlet end of a factory muffler;

(b) removing the factory tailpipe;

(c) cutting a factory Y-pipe above an outlet end of the factory Y-pipe;

(d) removing the factory muffler assembly from the vehicle;

(e) installing the exhaust pulse balance chamber of claim 1 onto the cutoff outlet end of the factory Y-pipe;

(f) rotating the exhaust pulse balance chamber so that the right and left legs of the exhaust pulse balance chamber are parallel with the vehicle chassis;

(g) connecting an inlet end of a right intermediate pipe to the distal end of the right leg of the exhaust pulse balance chamber;

(h) installing an inlet end of a right replacement muffler onto an outlet end of the right intermediate pipe;

(i) connecting an inlet end of a left intermediate pipe to the distal end of the left leg of the exhaust pulse balance chamber;

(j) installing an inlet end of a left replacement muffler onto an outlet end of the left intermediate pipe;

(k) welding together the right and left replacement mufflers;

(l) installing an inlet end of a right tailpipe onto an outlet end of the right replacement muffler;

(m) installing an inlet end of an axle pipe onto an outlet end of the left replacement muffler;

(n) installing an inlet end of a left tailpipe onto an outlet end of the axle pipe; and

(o) laying down continuous gas-tight welds around all pipe connections.

10. A kit for converting a vehicle from a dual-in, single-out exhaust system to a dual-in, dual-out exhaust system, the kit comprising:

(a) the exhaust pulse balance chamber of claim 1 ;

(b) a right intermediate pipe;

(c) a right replacement muffler;

(d) a left intermediate pipe;

(e) a left replacement muffler;

(f) a right tailpipe;

(g) an axle pipe; and

(h) a left tailpipe.