Recently deleted with DRD MM3 and FLO~PRO 5” turbo back.

So far very happy but have had a few bumps along the road.

So as of now I have just over 100 miles since the delete and I am fairly confident that I should be good to go as far as the tranny relearn.

So over the weekend I made my first attempt driving with the exhaust brake on. I have faithfully driven with tow haul and exhaust brake since I’ve gotten my truck. In any case, running the exhaust brake, it has always kinda sounded and acted like the truck was down shifting for lack of better terms.

Now since being deleted the engine sounds the same but the exhaust sounds something like a turbine winding down. Is this normal?

I guess its just not what I was expecting. I guess I was expecting it to sound like it was down shifting from the exhaust also.

I found only one video on YouTube so far and that’s exactly what it sounded like. Like the truck was down shifting. I just want to know that there is nothing wrong.

This is my first diesel so I’m not sure what to be expecting.

Thanks in advance