fuel pressure reg is after market adjustable upto 7bar had it set at 4 bar on idle as this is what its supposed to be set at on phase 3 but it seemed to be over fueling so i turned it down to 2.5 bar but as i say it starts to die once it starts to get warm, and cut out but does restart but wont tick over then, it dont back fire it just seem to splutter and hold back, i check the plugs every time and there sooty black again.