Seafoam can't hurt, but probably won't help a ton on it's own. Always a good thing to do though, especially if you haven't run it through before. Here's what I'd do:
1. Take off your TB, clean it out thoroughly. Make sure you get the crud that builds up around the pivots of the butterfly, as well as all of the passages.
2. Make sure your plugs and wires are in good shape. If not, replace.
3. GET A BB TUNE! Since you already have the AEM intake, a tune will really wake your truck up. I had the tune when I was completely stock, then added the AEM afterwords and noticed a very suprising difference.
4. Switch to e-fans when you have the cashish.