1.1i hesitation and slight serge on tick over

  1. #1
    right got the car 4 weeks ago had a full service done after 2 days

    oil,oil filter,air filter,sparks,fuel filter,coolant

    but their is this small rev serge at tick over sits about 750rpm and will raise to about 900 and drop again

    now with the exhaust note i believe the cat has been removed/striped out

    dont get a mil light
    reguards to the hesitation car will happily accelerate seems to be more apparent when cold but it is still their when warm but less noticeable

    engine seems to be a mk1 unit but is on 2000 w plate forte

    engine has happily covered 300 miles and returns approximately 35mpg around town and a bit more on the motorway

    any one had this befor ?