Well my car has 153K miles on it, and I am expierencing a slight hesitation, so I decided to check the ECU and this is what it brought back. These maybe old codes because I have been expierencing this problem for a few months now. I am going to reset the ECU and check it again in a few days too see if they are still there.

0704 Evap Control System Pressure Sensor
0702 Three Way Catalyst (right bank)
0303 Front Left Heated O2 Sensor

I did some research on the EVAP thing, and well my best guess is that is what's causing my hesitation and I also think that maybe why when I'm low on fuel my car doesn't run the greatest. I have no idea what a three way catalyst is, and I'm taking a guess and saying my O2 Sensor is shot. I wonder if the bum that install my YPipe screwed it up.

I am needing some help right now. Anyway I can possibly fix these problems, or should I just take the car in. Any help is greatly appreciated