Any 2-1 exhaust system will work, as for a tuner if you dont want to screw with tuning and pay someone stick with the HD Race Tuner or Master Tune TTS but if you have a good idea how AFR values work Daytona Twin Tec's newest VRFID 4 just came out.
D.A. FITZGERALD CO., INC. / FITZGERALD MOTORSPORTS Your one stop performance VRod shop!
Authorized dealer for Vance & Hines, MegaCycle Cams, CP Pistons, Brown's Plating, Carrilo Rods, ARP Studs, Falicon Crankshafts and Diamond Heads.
Services offered: Case Boring-26T Pulley-58mm Throttle Body-Slotting Sprockets-Pinning of Bearings-Custom Machined Wheels & Rear Pulleys- Engine Brace Kit