I was sort of rubbing it in my buddy's face. He had just bought a brand new $65k (base price plus all the exciting fees and taxes) Chevy Silverado with a 5.3L, and told me he was getting 10 to 11 mpg.
I was kind of floored why anyone would do such a thing, so I made and sent him this quick video (by text). Decided I'd go ahead and throw it up on youtube.
No muffler, no cat, no resonator. A straight 5 inch pipe from the downpipe off the turbo back. My 23 year old 2000 Dodge Ram, I bought it in October 1999. 196,000 miles. Runs GREAT.