I got these three codes today just driving along. Can anyone help me with what I need t change. The code p-0133 i am pretty sure it is cause the exhaust leak, would it throw these other codes?

http://www.overkillengineeringmotorsports.com/

P-0335 is for a CKP sensor circuit
P-0342 is for CMP Sensor Circuit Low Voltage
P-0133 is for your Oxygen Sensor (O2S) Slow Response Sensor 1, probably meaning for O2 sensor on your manifold (if you still have a stock exhaust manifold on) isn't getting hot enough because you aren't running your car long enough for it to get up to proper temperature.