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hi newby here

just bought my 1.8t its running lumpy on tickover and jerky acceleration eml came on and its thrown up a few different codes anybody else had this trouble heard it might need a new cat?
 

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Could be the lambda, can cause the car to run lean/rich etc.
Sometimes CTS sensors cause lumpy running issues but probably something more serious to have brought up the light. Got a code reader?
 
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