Hi not long just put a escort rs turbo engine into a mk5 escort xr3i picked the car up a few day's ago from getting wired up and on the way home put the foot down a litte but car would hold back and wouldnt go over 70+mph

Could it be running rich with it still running the xr3i fuel pump? car runs sound and boost's ok till you get upto about the 70+ mph mark then get the boost problems and not wanting to go over 70mph

CheeRS