So far, we've seen the best results with either the Full Race Intercooler and the ADD Intercooler by AFE. Either option will be a significant upgrade over stock and pull air from behind the main FORD grille and not the lower bumper grille...which is mostly covered up by the front plate in Texas.
The biggest power intake we've seen is the AFE Power Stage 2 Magnum Intake. You have the option of going with oiled or dry filters, oiled will have a higher flow rate, but is not recommended for dirt. If you do plan to use the truck off-road, I'd recommend going with the dry filter setup.
MPT also recommends going with an aftermarket thermostat and that can easily be had by SPD.
Other supporting horsepower modifications would be downpipes and SPD Turbo Adapters depending on which brand of downpipes you go with (some brands will not need them).
Finally, if you're really cranking up the boost, you may want to look into an aftermarket mechanical BOV that is metal and will hold up better to higher boost levels than the factory plastic eBOV.
Hope this information is helpful and please let us know if we can help answer any other questions for you.
