[elhigh]

Instead of starting and running for 15 minutes, get an oil pan heater and a coolant heater and hook those up. Wire them together so you just have one pigtail to plug in and set up an outlet on a timer in your garage (I hope you have a garage). Set the timer to energize the outlet an hour before you leave in the morning, and when you go to fire the car up it'll be halfway to operating temperature already, with no fuel wasted.

If you don't have a garage or at least a nearby outlet to hook up to, this suggestion is moot and I apologize.

I see you're willing to really dive into the deep end to make your fast car a thrifty car, and I strongly recommend you dig into PGFPRO's threads on what he's done to make his Eagle Talon a penny pincher when he isn't burning rubber at the strips. A lot of what he's doing engine-wise won't help you much, he's a turbocharging maven but when it comes to tuning, I think you and he could see eye to eye on a lot of stuff. For one thing, he's burning nontraditional fuels and for another, he's dug deep into lean burn in a car that never had it before. If you're willing to jigger the numbers on your ECU you could do similarly.