Ok, I went to black forest industries Friday to have an oil change and APR stage 1 flash. They flashed it with stage one and test drove it three times. When they returned the last time, they told me the flash went fine but it was losing boost and it wasn't working right, so they flashed it back to stock. They said it could be the DV. I also read that it could be the ECT sensor. Sometimes the fan runs at full speed at start up but only sometimes. Any suggestions? Im taking it back to them on Wednesday . Thanks I'm advance! 04 1.8t cvt