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As hero, my default line against an unknown would be to raise the turn, but it depends on which 2+2er it is.

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Given that we hit a pretty solid draw and are often good already, I am a strong advocate of not raising the turn (especially since we are getting such good odds to see the river).

As far as the river goes, I think it is very close, but I would venture to guess that calling is slightly more -EV than folding, but I think it's pretty marginal.