There are some programmers suitable for, and compatable with the Duramax engine. To get a broad view of them, spend a few hours reading about programmers on the
dieselplace.com forums, scroll down to "power and performance". The Duramax is a great engine, but can be easily destroyed with the wrong choice here. The Allison transmission is designed to reliably withstand only about 70 more HP than the stock engine, so that is the second-most important item.
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2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA.
" My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy