Shrifter is only for automatic transmissions, this other product mentioned is a way to paddle shift for actual manual transmissions.
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Eric
'72 Malibu - The FULL RIDE, LS7 power, Optima juice
'05 Volvo S60R, (my Swedish Hot-Rod)
C-12 Huron (operated but not owned) Fquick page
On Twist Machine - I think it is important to look at the torque converter work they are doing and some joint development to move automatic transmissions as a more viable race/performance option. V8TV had an interview .. and the last few minutes was the interesting part. If I understood correct their working towards being able to program your transmission based on your application down to the track your on. Combine this with engine diagnostics and tuning ....