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N Central IA | I have two trucks with Duramax engines I’m needing work done on in north central Iowa. One is throwing a code for fuel rail pressure and the other has some shift point issues, I bought it used and it has a tune but no idea what is in it. I’ve used truck specialties in clear lake but they can’t do anything with the tune. I was given the name Beyer motor sports from Hudson, anybody use them or have any other suggestions? | |
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Duramax machinery
