The boost pressure is also a big deal. Tracking while boosting +5-7 psi is different from +16 psi. And superchargers seem to add less heat than a turbo or TT system at the same peak boost/hp level.
One way to make this work is to just get two tunes on a TT system: a very low boost tune (like 3-5psi, almost off) for extended track use and a higher boost tune for street/drag/auto-x/a single fast lap where heat buildup isn't as much of an issue.
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