2020 IKE raw and unedited

Groover wrote:

ShinerBock wrote:

4x4ord wrote:

I'm surprised they're pushing that much more boost just to gain a few more ponies.

The added boost and air flow is likely not just for the extra ponies, but rather keeping temps in check with the extra ponies in all situations even sustained loads. Cummins tunes their engines for sustained loads, not just short burst power. If that means they are not the horsepower king then so be it. At least that was the mindset when I was there, but I doubt much has changed in that department since then. This is why all the review sites always state that the Cummins seems to be less effected by loads than the other two. Because the engine is set up and tuned for sustained power under load, not stop light pulls.

This can be tuned out with an aftermarket tuner though and ironically the max tuned power output of all three on stock parts are roughly the same at around 525 rwhp.

I have always felt that anything not sold as a sports vehicle and especially trucks should be able to survive continuous full throttle applications without damage. However, when pulling out into traffic with a heavy load I find sluggish performance gives me much more anxiety than losing a mph or two going up a hill. There is some merit to off the line performance. That is why I preferred the EcoBoost to the Powerstroke for my trailer towing needs. And it is what I hate about the Cummins in my motorhome. Watching vehicles coming at me at 60mph while the engine is thinking about going can be stressful.

Incidentally, while the 2013 Cummins in the motorhome is only rated for 300hp and 660 lb-ft of torque I know that have have seen 32psi on the boost gauge when on the floor at 2600rpm.

If that was your main concern then I would have opted for the 360hp/800lb-ft version of that engine for your motor home instead of the 300hp/660lb-ft version. Although the only difference between the two is tuning so you can get it increased without hurting reliability.