Over the years I ended up with three of these units. The paperwork here is by far rarer then the item.

Wow thanks Jay! As a Penn State alum, this accessory just got much cooler.

Jay, I had one years ago, never used it and sold it. Layden had one for sale a few weeks ago . I purchased it for looks only but was quite surprised that engine runs smoother and idles much better. Don't know about increased mileage but wouldn't be surprised. Haven't read your testimonials but thought I would add mine.

this one when I got it had this piece of paper in it I believe it is an nos

William, Any chance you could post a close up of the paper for us? It would be great to add to the documentation here.

They must have made a million of them. I bought a NOS one at a swap meet back in the early '90's and I've seen them at many swap meets since then. Also in antique stores and on ebay. It cracks me up when, it seems like every few years, someone brings out another "tornado" swirl type gadget that is supposed to "increase mileage and power". I've seen them dozens of times over the years. One was advertised just a few years ago. What cracks me up is, if that one small device would do everything that it is supposed to do, why wouldn't the car makers just add them to their vehicles in the first place? I'm sure any one of them would love to get a "jump" on the competition!(: Dave

Took the busted guts out of one of those accessory pipes and placed it on the faux '09 runabout, seemed to look good, as it was aluminum and wanted it to look older, like the early hot air pipes do.