I dont know if you read the complete story i did on the superchips in the rs forum. Read it all. That might be just right for you. First off the scr is extremely easy to switch modes, it takes around 5 min right on the monitor. I leave mine on power level 2 and use 93 oct because i found it to be the best all around setting. Level 1 is too sensitive at part throttle, level 2 is nice, and it hammers!! In drive it shifts nice and quick for reg driving which is good for daily driving and mpg and in manual it is killer, you will think your driving a different car, im serious, it pulls twice as hard as stock from 2000 to 5000. If you want to know anything else just ask. And thats on a bone stock rs. No intake, no exhaust. 0-60 went from 9.0 to 6.8 and 1/4 mile went from 16.80 to 15.35. But the 1/8 mile time is equal to a 14.50 car. It really hammers. Up to 65. And i get about 37.5 av mpg on highway runs at 70 mph. My lifetime average on the cars computer for 21,000 miles is 30 mpg. And that includes all the sitting and warming up in the winter.