Quote:
Originally Posted by ctmaybury@yahoo.com
Aero mods are clearly your best bang for the buck, but do you have engine mods on your truck too?
|
The Cummins X15 engine is basically stock. With our high visibility, we cannot do anything contrary to EPA regulations like modifying the engine. As a matter of fact, I had to sign an EPA/Cummins waiver to run our active grill system, as it needed a special ECM calibration. The stock Cummins sensors were not accurate enough for the active grill with the standard calibration. We also have a custom data-plate on the engine stating the EPA exemption for the custom calibration.
We do however have a very low restriction exhaust system. It is almost a straight-shot to the aftertreatment system. The OEM exhaust system of the brand new 2016 International ProStar that we used as a rolling chassis, had NINE, 90 degree bends in the exhaust system. Most of those bends were between the two different aftertreatment tanks of the OEM system. That old system was completely lame.
Additionally, the turbo is wrapped as is the complete turbo down pipe all the way to the aftertreatment tank. We still gotta plumb the intake, but I have been in contact with my partners at K&N Filters about engineering that system. So yeah, we try to get the air in and out of the engine as efficiently as possible. Airflow is so important, I named my company after the concept.
We also have a trailer roof solar array charging the 48 volt battery bank in the day time so our 48 volt Delco Remy alternator will have much less parasitic losses. And we have a way cool Horton Cooling fan viscous drive that is electronically tied into the ECM.
And of course I can't forget our special, super-duper, custom Shell Rotella engine, transmission, and differential oil for reducing driveline parasitic losses. We use special Shell "Witches Brew" (very appropriate on Halloween) blends of all of these oils. When we filled the differential with the new oil, it looked and flowed just like light golden beer. Very, very watery looking viscosity. But the Shell scientists tell us that it will protect the differential better than the OEM dark molasses looking and flowing, 85W-90 gear oil that we drained out.