05 flhtcui
Grand HDF Member
Joined: Nov 2012
Posts: 3,784
Likes: 100
From: Pasadena TX
Need a bit more detail. Is it stock? What does "perform better" mean to you? What is your budget? Generally speaking, the first performance upgrades are a free flow air intake, better flowing mufflers, and a tuner module. Depending on the selection of components, you can expect to pay close to $1000. When you hear the term Stage 1 it means the mods listed here. Next would be a cam swap, then a big bore kit. There's a good chance you have one or more of these parts already. Pull the side cover and see if there's a device plugged into the ECM.
Outstanding HDF Member
Joined: Aug 2010
Posts: 2,386
Likes: 15
From: The City Of New York
After the stage 1 as noted above, look into replacing the rear suspension with some Ohlins and change the fork oil to slightly heavier. It will feel like a different bike.
Outstanding HDF Member
Joined: Oct 2006
Posts: 2,263
Likes: 36
From: Georgia Mountains
I had an '05 with Screaming Eagle Air Cleaner, Stage 1 Download, V&H True Duals, Supertrapp SE II mufflers, and Andrews 21G Gear Drive cams.
By far, the most improvement in performance was gained with the cams.
By far, the most improvement in performance was gained with the cams.
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