Yes... Tune, 3BAR and TS are your best bet. The TS does help things run cooler under load.
3BAR can be found in rock auto for $45 FYI. You can just purchase one from LMS but they are more expensive. It's the same sensor either way you go.
I would also double check your spark plugs... SP-534 should be what's in there. If they are in good shape, just make sure you gap them to .030.
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