It's an improvement! But I don't understand, (please someone educate me), when a ZFG 93 tune will do low-mid 12's with no other mods then why bother with any other tune? Is is because the other tuners are cheaper? Is it because you already have a tuning device so it saves you money?
Honestly, for me it's because I have worked with other Calibrators on other Eco/Ford platforms and they all have a whack load of experience with their own shops, dynos, etc. I've built relationships with them and now having tunes for my Wife's ST from three different tuners on both SCT and HPT, I can say that for my non-ethanol tunes (e85 is not easy to get up here) that they are 100% in line with times posted by tunes from ZFG. I would like to see someone post up times from the Unleashed e50 tune to see how that stacks up to the e50 ZFG tune.
Adam has done a great job of jumping into this platform early and working with those that are chasing down numbers and also spend time on the groups and forums, it goes a long way. I see it with GooseTuned in the Raptor world, Unleashed in the Fusion World, GearHead in the SHO world and so on.