So I bought a used truck, and ordered a chip for it to get better fuel economy -- low and behold, when I was placing the new chip in, I found out that it was already chipped

　　I can't quite read the numbers -- but it looks like 395-030-540-300 --- let us just say that it comes out of 2000 Ford F-350 7.3 Powerstroke with Manual Transmission , and yes, it did do a good job -- and it works good, when I went back to "STOCK" mode i noticed how good of a job it allready did.

　　this just plugs into the back of your PCM,

　　$100

　　two-one-four - 980 - 6955