I've been looking to increase my fuel economy for a while now on my '08 SS. I know when I purchased it the fuel mileage EPA Estimates were stated. The thing runs on premium and I tried regular for a while..:bang: that was a big NONO, I fouled out a plug in less than a month that way trying to save...so i've been looking and researching and found mixed reviews on the K&N Cold Air intakes. I would like to know some of you guy's opinions and if you've done this to your SS what did you notice? I'd like to invest in it if it's worth the extra horsepower, torque and most importantly better FUEL ECONOMY. Or would I be better off getting some sort of performance chip? THANKS!