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Old October 3rd, 2013, 07:43 PM   #4
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What kind of power do you have on your programmer? Might be bleeding the fuel system if you are on a higher HP level when you get on it. A lift pump would help if this is the case. Not sure if they could help you out or point you in the right dirction, but Merchant Auto is on the west side. They specialize in Duramax but might know who to get in touch of for Cummins on the west side.
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