magnum computer

TT5.9mag said

You can also do it yourself with an sct handheld programmer (very limited) or with hptuners which now supports jtec (very advanced).

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FYI, the newest MVPI3 doesn’t currently support the JTEC controllers. No idea if support will be added later, only that it doesn’t right now. The MVPI2 and MVPI2+ still does.