I have been reading on this forum about Stage One (pipes, Tuners, and Air). And I thought for $1,200 that the dealership was quoting me was it really worth it? So I talked to the dealership again and I decided to make the leap - I put on Screaming Eagles, the SERT and the Stage One air filter. I took it easy on the short ride home and I really didn't notice too much difference because I also took it in for the 5K service and I wanted to go over the bike before romping on her. I did the TCLOCKs, looked at the new tire, checked all the fluids and did a wheel to wheel inspection.... all looked great. So this morning I went to work and got on a stretch and romped on it - OMG! Who woke up my sleeping pony! It had a LOT more giddy up and go. I could not believe it. I when I got into town I found that below 10mpg I did not have to feather as much and felt no sluggishness at all. So was it worth the $1200 - every penny - like many said before - I wish I had done it sooner! BTW, the pipes are the perfect sound I was looking for... I could not be happier with this mod. One question though - they gave me this orange plug in looking thing - what the heck is that? Is the the SERT?