Saw this on page 20 of the May Four Wheeler, called Air Furry for 00-05 Ford 7.3 and 6.0, supposed to drop EGT's by 62 degrees and increase gas millage by 3-4 MPG. Anyone running one? http://predatorpower.com/
I couldn't find what you're referring to on Predator's page, but if it's one of those air swirly devices, I call BS, big time!
Yeah, I couldn't find it either, just noticed it in the latest magazine as a new product, not sure what it is exactly.