I bought a 07 Speed3 for my wife. Silver 37K miles, adult owned 1 owner trade on a BMW (yeah sure). The ecu is throwing codes for high fuel psi, and misfire. Reset the code and it stays off for a couple of days, but comes back on. It is running rough (major hesitation) at low revs, especially when it is hot and the A/C is on.
I had it on the rack for an allignment and we noticed that it looked like a different turbo had been installed, and returned to stock. We were looking for an upgraded fuel pressure regulator (that might have been left on) from the prior turbo, but there was nothing obvious.
We really don't know for sure what was done but any educated guesses as to what might be left over from a turbo upgrade package would be real helpful. What is the standard mode to up fuel flow with a bigger turbo?
Alan
I had it on the rack for an allignment and we noticed that it looked like a different turbo had been installed, and returned to stock. We were looking for an upgraded fuel pressure regulator (that might have been left on) from the prior turbo, but there was nothing obvious.
We really don't know for sure what was done but any educated guesses as to what might be left over from a turbo upgrade package would be real helpful. What is the standard mode to up fuel flow with a bigger turbo?
Alan