My 2004 alero tops out at 105 i know it can go alot faster because i can reach 105 in 3rd gear and i still have 2 more gears to go.i really want to change that because my car has so much more potential then it is showing. If any one can tell how to change it or to even get to the ECU would be great i really want to show the potential of my car. Or even ways to help improve the top speed of the car itself.