ms6 help troubleshooting

Howdy Today I got my 2006 MS6 from the shop as I left it for a lookup and cause in 4th and 5th gear mostly, on high boost, ie under high load, would start lurching. Initially I thought it might be something to do with the awd, but thats all good, and it is the same regardless DSC on/off. So...

Good afternoon, I've been having a multi cylinder misfire after installing new fuel injectors (refurbished) with Cork sport seals. One of the injectors was bad, so that injector was replaced while i checked the ohms of the other 3 and all were good. Car ran a little better but was still...