chips

I did a lot of mods on my 03 Cummins and it helped in all aspects.
After towing my TH this week with my 16, I have no desire to add anything.
These new trucks are amazing. I slowed to 50 due to traffic up a 12% grade and was able to accelerate back to 60 easily. Faster if I had wanted.
My advice is leave it stock. Not worth the risk. The computers record "everything".