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  1. Dyno/Tuning Room
    I have a 2011 DS450X MX with an HMF slip on and a K&N intake with a high-flow lid and an Attitude Industries fuel programmer. I was hoping to add just a bit more power and was thinking about doing some minor motor work: Cams, piston, port and polish. I was told to go have my motor professionally...
  2. Engine/EFI/Drivetrain
    who runs what exhausts and y? what full set ups work the best in ur opinion? what company brings the most power to the wheels? go ahead brag ;)
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