Just got it installed and it looks great. We'll see how it runs tomorrow. Question... Can I just remove the spark arrestor or do I need to replace it with the insert that Yoshimura calls for? I wasn't aware of the insert requirement when I ordered the pipe the other day and I want to ride it tomorrow. Has anyone just removed it and ran the bike like that? I certainly don't see why this would be a problem myself and have all but decided that it won't be. Just looking for a little confirmation before I do. I also just got the Power Tuner. I have no idea how to use it yet and will be playing with it once I get the kiddos to bed. Any thoughts on what would be a good map for this pipe? I got the pipe and tuner to hopefully tame down the bottom while uncorking the top. Any thoughts? Advice? Personal experiences? Thanks in advance.