Custom machined inlet to improve Turbo spool and Throttle response. Race muffler weighs 5 lb, (10.2 lb weight savings). Stainless flex joint to wastegate. Stainless mounting brackets. Mounts in factory location. Dyno time and several revisions were done while creating this muffler to give you the absolute most performance out of your patriot boost. Straight through race design. Does not require tuning, bolt on and go..