I have an '04 fXT mt. I got this P0011 error a few weeks ago and have been battling it ever since. I get a really rough idle and at times it feels like my turbo doesn't even spool up. It feels like I'm pulling a boat behind me. I've taken out the oil line filters, cleaned the oil flow control valves, sea foamed through the bypass line, changed td04 turbos, check my timing belt(all marks line up fine), changed my pcv valve, changed my fuel and air filters, changed my oil and filter and that's about it. The rougle idle decreased significantly and at times I can't even feel it. I can reset the code, it goes away for about 15-30 miles and then comes back. I'm completely stuck and have no idea what else to do. The only thing I can think of is that my avcs camshaft sensors are clogged, but they're way back on the block behind the manifold and I don't want to start taking that apart just to get to them. Any suggestions?