I have recently purchased an SH that came with LeoVinci sbk carbon fiber cans, why do others have LeoVince with an e on the end?

 

The sbk (think superbike) are their open pipes. The "e" as you refer to are their evo line that are euro legal and come with a dB reducer installed. You can remove it for the full sound.

Me? I personally prefer the db killer on mine as it gives a performance sound quality without the sound quantity. I don't like advertising my speed if you know what I mean. My avatar shows stock rc51's but you can't tell they have a very light bafflectomy.

Here's a link to my evo's with the dB's installed on a honda V4:http://youtube.com/watch?v=8ldjrL7kbm8

I immediately removed the stickers after shooting the video. They are metal and should last a long time but I found them too large and the wrong color.