right guys i had a slight misfire under acceleration so changed the plugs (ngk7s gapped to.65 now car going well no missfire under acceleration only on tickover. when cold it's fine once it warms up it's there another thing my revs have dropped on tickover .changed the maf as well
ozz

 

Do you run a dump valve or the standard re-circ valve?

Tried the lambda sensor or idle control valve?

 

it's had a dump valve on it since i bought it and had no probs in 12 months

try what with lambda and icv please

 

Dump valve could be causing irratic idle. Take off the idle control valve and clean it with brake cleaner (from what I remember but not 100%). Dodgy lambda cab cause a missfire and hesitation, did on my old uk turbo.