I have lost my disc for portfueler. I was looking on hahn to order a new one and have come across a problem. i noticed there are different stages as in stage 3, 4, and 5. What is the diffference between the disc. I am not using a hahn turbo or manifold just mainly the portfueler. I have tried contacting hahn but emailing is taking a while because of them moving to florida. Anyone that knows the difference would be of great help. Also if someone had the disc or could get me a copy please let me know thanks
bobby