right on way to ford fair and on the way back afer driving for about 2 hours when i was sat at about 70 at 3000rpm and let me foot off and then put it back on the car would sorta of bog down and seem to sound like its missing but it only ever did it when i took my foot off and on again , so while i was there i got a group A coil , fitted it , and on way back same problem , so i decided to take boost gauge vacuum off the line so it just had a vacuum from the ecu and dump valve , and the problem went away
any idea? faulty boost gauge , (it never seemed to read properly as no matter what i set boost to it never moved