The g-ride lives!

It turns out that the sound coming from my car was just my flex pipe going bad. The flex pipe is practically in 2 pieces now. Its extrememly loud! The car runs lika a beast. I notice performance gains alot while accelerating. i was thinking about telling the mechanic to cancel the order on the new flex pipe because the car runs so much better now. But the noise is too much for me. The cars engine light is on now. and the idle on the car is getting funky. sometimes its low and somtimes its real high i think this is because of the oxygen sensor, but im not for sure any ideas on what it could be?

thx

Yup, an exhaust leak before the final O2 sensor will cause an over rich condition. As well as throwing a check engine light.