Which mods to but on stock V6 to get better MPG

Hi guys,
I saw the other thread posted today about upgrades for performance and thought about posting in it but thought it might be better having a seperate one as I am looking for a different result.

I have just purchased a 2007 Conv Pony Package V6 with 5-speed manual tranny and have about 2000 miles on it. It is still stock, I have done nothing to it. I have noticed my short trip to work of 4 miles one way yields me about 12 mpg. Ouch!!! When I go across town on the freeway I get 14 -17 mpg depending on how hard I put my foot into it. On a road trip drive at 75-80 mph I actually got 28 mpg. Needless to say I would like better mpg's when driving to work.

I am happy with the exhaust note, performance, and handling at this time as I was previously driving a Volvo wagon and know no better. I'm not looking to drag race anyone down to the next traffic light but if performance is gained in the persuit of better in town mpg all the better. My goal is to keep this car for 4 years and then turn it over to my daughter so I am not looking to make a pavement burner that she will get into trouble with. So if performance mods that are put on can be reset to make a mild performance car in the future that would be great. I just want better fuel economy in town.

I have been told a CAI and tunning is what is needed but to me that looks like more of a performace mod. Looking at the BamaChips site I see a couple of "kits" for V6's. What is the difference in them?

Where would I start on making mpg mods?

Thanks in advance,
Jim

Well I keep watching how I drive the car as a clue to all of this. The last tank of Costco 91 OCT gas I got 15 mpg in mixed driving. About 2/5's of the tank was at freeway speeds of 75mph and the rest at back and forth driving to work. Got 14 mpg the first part of the tank and by the end of the tank I was getting 17.5 mpg. Overall was 15.2mpg calculated. I watched my shift points and tried to keep the shift at about 3000 rpm.

In Phoenix, we only have 87, 89, 91 OCT available to us. I see some of the post talking about 93 OCT. I really never thought any of the OCT stuff made any difference. I am going to try the next two tanks at 87 OCT.