dealer slowed my balt.
I have an 07 Cobalt LT automatic with 41000KMS on it. Took it to dealer for the famos fuel guage issue. They replaced a sensor and all seemed fine. Then at 1/4 tank my car would loose RPM took it back they changed fuel pump atleast thats what they claim. No my balt just feels slow. Is it possible to slow down the acceleration or adjust the WOT on a stock balt? Could they have reprogrammed the ECU?