H&S and BADP both have kits. BADP was supposedly going to be code free with a kit right about now. Don't know for sure but you can check them out (Bay Area Diesel Performance) Look around in the 6.7 performance sight and you'll find a link for both. Most of us have followed the diagram in this forum called potentiometer diagram. The POTentiometer costs 3 bucks at radio shack and installation is simple. I had mine done by a mechanic due to time and simple mechanical ineptness on my part. He charged me well under the $ figures quoted for just the fooler boxes. I do have codes...don't really care.
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