O.k. I have some questions about air cleaners and tuners. I have a 2008 FLHT with a Stage 1 installed as well as V&H FL Slash cut slip-ons. I would like to get a little more pep, but don't wanna go nuts. I would like to get some more passing power on the highway without sacrificing gas milage too much. I've read several things which were either confusing to me or conflicting. I've researched a few products that look nice, but I'm not sure what are my best options: 1) I've looked at the S&S Single Bore Intake Runner Kit (2 cone style air cleaners). Is there that much of a difference compared to what I have now? Will this give me the boost I want for ~$450 or is the S&S Tear Drop air clener sufficient? 2) Will the K&N Performance Intake kit (1 cone style air cleaner) be similar or better / worse? (I can get it on e-Bay for about $275 with shipping to Canada). 3) If I do the above upgrades will I have to get my bike retuned or is it not required because of the software download with my Stage 1? 4) Do I really need a tuner for just this or can I wait until I replace my cams? 5) Would the V&H Throttle Pak alone give me enough extra pep to meet my needs with my current Stage 1 config? I know its a lot of questions, but I know this IS the best place to ask them. Thanks in advance.