Basically I agree with Oilfield. If you can afford both and don't mind spending some extra cash, I think getting the Bazzaz+FT interface is the way to go. It's just faster. Bazzaz controls all injectors, and has the option to switch between 2 maps on the fly, which is a handy feature. Fuel-wise the FT interface can do the same thing as a PCV, it's just a bit more time consuming. But you're removing the risk of a piggyback unit failing and dropping weight, so there are advantages there too. I don't have a tuner and just wanted to try Bazzzaz+AT after hearing a lot of rave reviews. It's a good setup, but a custom tune by a good tuner is going to be the best option.