It's really not, we've got both at work. Cummins not only sounds better, it pulls harder too. Probably mostly due to tuning, the Detroit trucks do not want to downshift on hills and they bog down. The Cummins trucks you can manually select gears 4 to 6 so it'll pull up hills without losing speed.
@@AdmiralRustyShackleford actually it depends on transmission programming. I’ve ridden CEs with Cummins and they don’t downshift when pulling uphill unless you give it close to full throttle.
@@charlesrodriguez7984 The Detroits we have, most of them will not downshift at highway speeds, at all. Sometimes they'll slow down to 50mph uphill, and even with full throttle they will not downshift. I'm sure it's in the tuning but it's annoying. Freightliners tend to do this more than Internationals in our fleet (Ryder leased trucks). A manual transmission would solve all that but they're all but dead in everything except tractor trailers and sports/muscle cars.
@@taterjordan5628 We have both at work and the DD5 is just as loud as the Cummins 6.7 and to me the sound is worse, the Cummins sounds deep and powerful while the DD5 sounds like it's rattling itself apart.
