-4x Realms Uncharted for 4x Explore . The ramp AND card draw are necessary for Tron. Tutors are great, and you have plenty, however card draw you have none of.

-4x Not of This World (decent sideboard card) for 4x Prophetic Prism and/or Chromatic Star .

Ancient Stirrings is another great tutor, as it can net land or colorless spells.

Wurmcoil Engine is a must. Replace the weak Eldrazi with him.

The other Eldrazi, Emrakul, Kozilek, and Ulamog are also great freaking cards that could be here, pending budget.

I would highly suggest you splash another color for some added disruption and interaction. Tron, and other ramp decks like 12 Post, don't do much the first few turns except draw, tutor, and put lands into play, thus are vulnerable to Aggro.

This is a rough idea, but it's my idea of a R/G Tron list:

thanks for ideas, don't want to pay for Wurmcoil Engine , and i just can't find anything to replace with Ancient Stirrings , everything else is great though

I'd suggest you check this out.

It's a list of all of the recent top 8 Tron decks, G/R is a typical incarnation of this deck and that list can give you far better pointers than I can. My specialty is UTron: I Fight For the Users!.