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6.0L surging/Choking while towing

696 views 0 replies 1 participant last post by  AmarillobyMornin 
#1 ·
I was towing up a 6% grade in Oregon this weekend, towing a 10k toy hauler. I was using Matt's 13k tow tune. As I'm heading up the grade, the motor started choking/surging around the 2800 Rpm range, 4th gear, boost was 20 psi. If Let up on the skinny the surging went away, if I mashed on it, the surging went away. All of my temps checked out ok. Trans 175, EOT 220, ECT 212. This has happened twice now. Truck drives completely fine when not towing.

Does anyone have any input, or has this happened to any one else?
 
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