fault code p1557 (mk4 Ibiza)

[cooper61uk]

Hi guys,problems get fault code on a run got vag-com ,first question is my car 2003 ibiza sport 130 ,its done 85000 miles and
has it got a variable vane turbo
egr valve is cruddy,
been running on cheap tuning box should i take it off as it caused overfueling
seems vac pipes are ok
should i check tubo

Im going to clean manifold & egr
Any thoughts
thanks
John

 

[beezanick]

Id try removing the tuning box first, and see how that goes, as it could be causing your problems.

 

[cooper61uk]

Tried that no change but less smoke
ta