The SE slipons have a bit more sound but the sound thing is subjective. What one person likes another thinks is too loud. Find some bikes with different mufflers on them and listen to the sound to see if this sound is what you like.
As far as adding fuel, there's many ways of doing this and the key factor is how much time and money do you want to invest into making it run better.
I like the TFI over the Power commander for bikes that will not be heavily modified with big cams and head work, compression increases etc.
The TFI does not need dyno time or a computer to set it up. The PC III needs some computer time and possibly dyno time depending on how you want to dial it in. There are also more advanced ways of adding fuel like the SERT. All these topics are covered in this forum.
Diagnostics, Alarms/Security, and Fuel Injection Related. - Harley Davidson Community
As far as adding fuel with the slip ons, many will tell you it's not needed but the factory settings are very lean and the 02 sensors are narrow band which will not adjust more than a pre specified amount. I add fuel which cools things down and makes it run better too.
Welcome to the forum!
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