I have a 02 cc 2wd. Cruizing at 75-80 on the interstate, it has a jerking as soon as it starts to build boost. If I nail it, it smooths out. It it much worse with the superchips installed, but still very noticable at stock. So, took it to the dealership. They said bad injectors. They replaced all eight. It got worse. Let me back up. First I changed the fuel filter, it got worse. Then the did the injectors, not only did it get worse but lost power. So, once again I go back to the dealer. They had it for three days, put 250 miles on it. They say they DO feel it,but they can't find anything wrong. The service advisor told me I'll just have to live with it. Now I could deal with it if I didnt drag aroud a 25ft goose neck. With the trailer on it, it's awful!!! Short of lighting a rag in the fuel neck, anyone have any ideas?? I need help guys. Thanks:help:

They graph the fuel pressure regulator?

I'm not sure. I asked them to check it.