Orv,
I have had a Edge Evolution programmer for several years now. My mileage increased 8% (as long as I keep my foot out of it). I am looking forward to the exhaust brake. We can down thru the Eisenhower pass in to Denver back in 2007 and that is the only time I truly wished I had one. Brakes never got soft and never smelled brakes but it would have really been nice to have. With the new trailer being about 3000# more, I felt it was a must.
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