Review on Walker 21565 Quiet Flow Stainless Muffler by Alex Mortensen

Based on our own experience, this muffler did not live up to our expectations. While it did produce a slightly quieter exhaust note, the performance gains were negligible at best. On the downside we found the installation process to be excessively difficult and time-consuming .Overall, we cannot recommend this muffler for anyone seeking significant performance improvements in their exhaust system..