Today was my birthday so you know what that means, plenty of new cash flow. I have a pretty good deal of money and I'm going to contemplate getting a silencer but I think for sure I might get a new air filter. I'm hearing good things about both brands, the Twin-Air and the Uni-filter. The thing I'm wondering is will these improve throttle response or performance in the least? Also will I need to rejet with one of these filters. I have a slightly rich condition right now. I'd really like to know so I can put my money into a good investment for my bike.