2004 Audi A3 2.0 misfiring under load

[Mikey2015]

Hi all got a problem with my Audi only when it's warn u put your foot down it judders and misfires bad don't do it when it's cold? Had new injector loom new injectors new tandem pump and no coads coming up on machine

 

[RapidAssistant]

Is it diesel or petrol? If it is the latter, then a misfire under load is often attributed to a dodgy spark plug.