Hey all,

My truck, 2014 3500 with straight pipe, DEF/EGR delete & MM3 tuner, recently started to surge or lope but only when I'm usually accelerating or barely feathering the throttle.

If I jump on it, she runs fine.

The delete was done almost two years ago, which makes me wonder why it hasn't done this until now if it has to do with the delete.

Any advice or help would be greatly appreciated.