They aren't completely out yet. We have a set on a customer truck, and he really likes them. PPE should be in to full production within a few weeks and we will see more. I know I have a few guys who have already ordered them, so hopefully we will get some good results when they ship. I don't have any firm numbers as we are now working on other tuning items. What I can say, is that with just a TST, the PPE dual fueler kit made a noticeable difference, and has no effect on driveablility etc.
Within a few weeks, we should have the other mods done on the truck and will hopefully have more info from the track and dyno. The kit is super clean and really well done. I will keep you posted on the results.
Craig