positive that the plumbing is good, we have come up with another theory, that maybe the fuel pressure reg isnt working becoz its possibly leaning out as it comes on boost. We did a bit of a test today and if i let the revs creep up slowly to 4500k then give it a bit it isnt as bad but if i nail it at 3k and let it try and wind up it hates it. Any thoughts on this.?
by the way the pump is all good as it is a 5.7ltr pump and yet to check the filter