Re: Aftermarket exhaust Can
Replacement cans usually dont make additional powr. Sometimes they even decrease it due to losses in backpressure, scavenging, create flat spots, etc. The main benefits are lighter weight, increased ground clearance, and better sound.
Rejetting is not always needed, but Blades are set up on the lean side from the factory. Compare a fresh set of spark plugs after installation to the old set, learn how to take a reading on plug condition to determine if jetting changes are needed.