well, we spoke too soon. the Problem has come back again. When you start the car hot or cold, fine the car starts and idle settles down at about 1000. Set off in car and you will get the occassional misfire and judder if you try and put your foor down even slightly.
But as soon as its had a good run of a few miles, you come to a stop, the revs, shoot up to between 1500 and 2000 or they do the exact opposite and kangerroo from 1000 to 300 nearly stalling. then in slow traffic, for no reason and with not warning, power dissapears, and the car either cuts out or judders until you turn the ignition off and restart it. The car is running like a bag of crap. were just about sick of it and running out of ideas. Maybe the liftpump we put in from GSF was crap? (It is vocal at all times now) the main pump may be knackered, the metering head may be sticking (plunger inside). Tried blowing thru tank breathers and they seem clear enough. Running out of ideas guys.