Well with the gas prices going up more and more everyday, driving a mustang can get expensive quick. So I started to look into way to get better gas mileage, I did a review of tuners and other items said to save gas and everything. I also looked into changing the air intake system and doing a basic tune up. This was probably one of the best decisions I have made it a long time. Now remember my car is a 2003 Mustang GT with 79,XXX on the clock.
I picked up one of our new Darkforce Technology Cold Air Kits (Part Number: LRS-9659CA9) which only cost $99, and the quality of the part is awesome. The tubing has a very nice finish and all of the hardware is top quality stuff. Along with that I purchased some new spark plugs and other odds and ends for the tune up. A total costing about $150
The air intake went on it about 20 - 25 minutes and was very well fitting and looks awesome under the hood, I also swapped the spark plugs and discovered someone had put platinum plugs in the motor.....not a good idea. I went back with the factory Motorcraft Spark Plugs (Part Number: AWSF32P). But anyways before all of this I was getting about 230 miles to about 14 gallons of gas running regular unleaded, which comes out to almost 16.5 miles to the gallon. Now after the air intake and the sparkplugs I get about 260-270 to the 14 gallons which comes out to almost 19 miles per gallon. It doesn't seem like much but it can definitely help save a little cash at the gas pumps.
So for a little money now you can save a lot down the road.