Join Date: Jun 2013
Location: Brisbane, Australia
Mentioned: 0 Post(s)
I had the Yoshi muffler and found it loud when you got on the gas. Fine when cruising. I fitted a Dobeck EJK and was very happy with the performance. It's quite common for manufacturers to tune their engines on the lean side to get them passed emission controls. I noticed this at low speed cruising on the Versys. The fuel controller did eliminate this. IMO all engine could benefit from individual tuning, that's if you want to extract the best performance. However, this all comes at a cost. Fuel controller, Dyno time,mapping & additional fuel consumption now that your engine isn't running lean. You will also need a tuner who knows their stuff. If you are anal or doing track days, then go for it. Most people are happy with how the bike comes out of the box.
I have ridden a Versys fitted to the Leo. I think this muffler is the best at getting as close to the original for volume and will recommend that you keep that on. It won't cause any damage to your engine or neighbour relations !
We must also remember that manufactures are not stupid and they spend millions of $ developing their engines. They may run a little lean, running a little hotter than in an ideal world, but they would never compromise the life of the engine. It's a fine balance between performance, fuel efficiency, engine life and country emission requirements. The choice is yours. Some people wash & polish their bikes, some just ride them. Which ever one you make, it won't be wrong. Motorcycles are a personal thing, that's what makes them so interesting.
Last edited by eddieglitter; 03-03-2015 at 05:46 PM.