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Discussion Starter · #1 ·
Truck runs ok on stock but when I turn my banks 6 position up it sputters at 2300 rpm then clears up at 28 monitoring injectors I see the dont open smooth but somewhat spurattic
 

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So I have 97 1 ton 7.3 banks 6 position all sensors new except tps and mass air flow builds boost around 9 pounds new fuel pump IHOP is operating correctly with chip on stock it runs ok after I cut muffler off anytime I run a tune it coughs and sputters around 2300 rpms sometimes a little lower will clear up a little at 3000 but wont go any higher I unbolted downpipe and it ran alot better I'm about to my end love this truck more than my cummins but cant seem to get her lined out
 

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same situation on my 95. runs fine stock, put a tune on it and she kicks real hard. recently its started doing it on a stock tune. time to start doing some live data and find whats going on with my forscan
 
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