C13 hp and fuel mileage

I had an 08 that was rated at 410 hp. 15 speed an 3.58's. I had it tuned with the 500 euro file at 1650 torque. It ran like a different truck was happy. Fuel mileage never changed from 410 to 500. Never seen it much better than six. High 5's on the quarterly ifta.

 

Had to get real familiar with iva's or vva which ever you prefer. Other that that wasn't too bad of a little motor. I had two matched units

 

Also I was unaware of a 500 North American file. I thought all you could get was 475. It may be the torque setting that's different. The 410 was a multi torque. Complete boat anchor. Go with the straight 1650

 

I have a C12 in a single axle 379, and just recently had a tune installed. Engine was rated at 410 and like @noluck said, had it bumped to 475/1650.
Totally different truck now.

 

No pre dpf.

 

I have a C13 and my mileage increased once I did a tune and a delete. I need to get the overhead done, but when it's set, I usually end up with somewhere in the neighborhood of 6.5 mpg. Mine is a 475 and the tune did absolute wonders to the performance. Without putting it on a dyno, I don't know what the actual HP is, but they estimate somewhere in the neighborhood of 550.

 

I used the diesel Doctor in effingham when I did mine. They also had a guy in kenly.