Vehicle exhaust with length-equalizing muffler

A muffler adapted for reducing unbalance of pipe lengths in a vehicle engine exhaust system, the muffler comprising:

• an outer shell enclosing first and second internal inlet pipes and a single outlet pipe;
• the first internal inlet pipe being longer than the second internal inlet pipe by a predetermined length dimension;
• the first and second internal pipes adapted for connection, respectively, with external first and second exhaust pipes of differing lengths adapted to connect with spaced exhaust outlets of an engine, the second exhaust pipe being longer than the first exhaust pipe by approximately said predetermined length dimension;
• whereby, the internal inlet pipes, when connected with their respective external exhaust pipes form pairs of connected pipes of approximately equal length for delivering engine exhaust gas flow with similar sound wave and exhaust flow patterns to the interior of the muffler;
• wherein said first and second internal inlet pipes connect with both low and high flow chambers of the muffler which are separately connected to respectively deliver low and high flow volumes of exhaust gas from both inlet pipes to the single outlet pipe.

A muffler adapted for reducing unbalance of pipe lengths in a vehicle engine exhaust system, the muffler comprising:

• an outer shell enclosing first and second internal inlet pipes and a single outlet pipe;
• the first internal inlet pipe being longer than the second internal inlet pipe by a predetermined length dimension;
• the first and second internal pipes adapted for connection, respectively, with external first and second exhaust pipes of differing lengths adapted to connect with spaced exhaust outlets of an engine, the second exhaust pipe being longer than the first exhaust pipe by approximately said predetermined length dimension;
• whereby, the internal inlet pipes, when connected with their respective external exhaust pipes form pairs of connected pipes of approximately equal length for delivering engine exhaust gas flow with similar sound wave and exhaust flow patterns to the interior of the muffler;
• wherein said first internal inlet pipe includes a return loop extending from an entry portion to an exit portion that joins with the second internal inlet pipe for connection with an interior portion of the muffler, the return loop having wide bends with small curvatures, avoiding sharp corners to promote the free flow of exhaust gas in the first internal inlet pipe.