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#8 |
Senior Member
Join Date: Sep 2007
Location: Henderson, NV
Posts: 583
Likes: 8
Liked 54 Times in 27 Posts
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Art, if you have a Cummins in your 550, call Mark at TST Products in Indiana. He worked as a Cummins engineer for 33 years and makes power/mileage products for those engines. 812-342-6741.
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