I also have a '21 turbo. Staying out of the turbo is the way to go to save $$ on fuel. Around town is where most driving is, at least for me and so turbo isn't really "required" as a result I can get about another couple of miles per gallon out of it by driving gently. It is hard to stay off the "power" but after the novelty wears off, it's pretty easy to do.