Do I need to tune the ECU along with the R-77 dual slip-on install?
Asked by: Dads
Generally speaking, a slip-on can be installed without needing a tune. Depending on your elevation, bike, other modifications, and a whole host of other stuff, like which muffler you chose, you may still find a need to change up the fueling. Even most stock bikes would benefit from a fuel controller or carb re-jet, anyway. Except for a slim minority of cases, most people can get away with an aftermarket muffler without altering the fuel system. If other parts of your bike undergo modification (like later you add some headers, or you have a high-flow air filter) plan on re-tuning the fuel system.