I just installed the jb4 Saturday and I loved every minute of it. Everything ran great all day, so then I did 30% e85 mix and all I can say is that it was even a little better. I then drove my car down to the track, and before I got there it felt like I was slowing loosing boost each time I did a pull until the half engine light came on and felt like I had lost all boost. Vacuum lines have all been checked and they actually looked almost new. I have read a lot of threads with many different symptoms, and many different solutions. I thought after checking all the vacuum lines I would post a log because the car otherwise seems to be driving ok.
Thanks
140721_1538.csv
Thanks
140721_1538.csv