This is doing my head right in now
Bought a used pump from eBay. Swapped all the fittings etc, had it on and running in half an hour.
Went for a test drive, let her warm up, then gave it some full throttle off the motorway slip. Went through all the gears as good as new...then literally 3 miles later, the same problem appears again.
Left it for an hour at the gym, on the drive home gave it some beans in 2nd and 3rd and it was back to normal. Round a roundabout...no power above 3000RPM.
I did some VCDS logging before the change, so will post up the graphs when I get some time to look at the data.
I'm scared of shelling out £150+ for a new OEM pump in case the map is somehow killing them?