A4 B6 2.5TDI missfire at around 1100rpm

[muso58]

Hi Guys  ive just put this  b6 cabrio  on the road  .It has a missfire  at  low revs like  the engine is completely cutting out for a second then  goes back to normal .Just like  if you flicked the ignition off  and straight back  on .Ive  scanned it with vag,com  and getting  these codes 

p1857  -35 - 10  intermittent 

00550- start of injector regulation   08-00-control limit surpassed 

17583  Pre injection turned off

p1175  -35-10 --intermittent

p1672   

It  has loads of  smooth  power  at  anything above 1400 rpm  

this appears only when   doing around  1100 rpm  in high gears .

Any  help  as usual really appreciated

[eri]

hi bro how have you fixed this pre injection off ,i have the same problem.thanks