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The Tuneboy software and cable work on pretty much all FI Triumphs so if you switch models or have more than one all you need is a new map.
My S4 is completely stock and retuning it has filled in the 4000rpm power hole, reduced buzziness on the freeway, and pretty much increased power everywhere. Midrange is so good now that I rarely use the top end unless I get lazy and don't feel like shifting.
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