new catalytic converter/ hesitation on exceleration
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I replaced the mass air flow sensor, the catalytic converter due to damage, drove it and occasionally when I let off the gas and resumed hitting the gas pedal the car would buck. Didn't do O2 sensors mechanic said they were fine. Also need an emissions, station said can't read data, how long do I drive before I go for emissions or do I need to reset something in the computer? ![Wink](https://mercedesforum.com/forum/images/smilies/wink.gif)
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