True Datzayne2427 said:JJ , I use cumminsforum.com mainly. Read a lot of tech from Michael Nelson (mopar1973man.com). You can usually call him with any question and he will know the answer 98% of the time. He is full of 5.9 knowledge.
hjpcummins said:Cummins forum.com for green guys
Competition diesel.com for guys that know your chit and either race or sled pull
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