Well, it somewhat depends. OP, what are your mods? To my knowledge, Eric's tunes generally are for specific mods, though he does have maps for a wider range than, say, Cobb. To clarify, Cobb has stage 1 and 2 maps that include intakes, but Eric covers many more brands of intakes. Not sure about what he does if you have anything beyond an intake and standard stage 2 mods (downpipe and/or turboback).