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I have a stumble at 4800rpm in 2-4 under hard acceration.
I have a vortec running 10 pounds of boost with 42lb injectors. First gear is fine and it doen't lose fuel pressure. Any ideas? I do have a sct tuner.
 

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Many ideas but first can you send me a datalog with the air fuel gauge logged

Maybe a 5 min idle then a 3-4 min cruise and a 3rd gear wot

Tom
 
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