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Hey guys,

I have a 2007 Dodge Ram 2500 5.9 Cummins and recently programmed it with a smarty tuner. Everything was running fine but to do some testing i decided to set it back to the stock tune for a while.

IMMEDIATELY after changing back to the stock tune, I noticed a change in the engine. If you just put the peddle down and attempt to just "go", the truck loses all power while it changes gears. You have to let your foot off the gas and ease it back on to get it going again. This is especially bad when doing between 40-50mph and attempting to gas it to pass another vehicle.

At first I thought something was wrong with the transmission but its not like a slip in a transmission. It's like it's just not getting the fuel it needs for the throttle I am giving it or something.

It's hard to explain but is frustrating and even dangerous with not being able to pull out on the highway and get up to speed.

Any idea what this could be?

Thanks in advance!
 
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