YEAR | MAKE | ENGINE |
---|---|---|
1999 | Ford | 7.3L Powerstroke |
2000 | Ford | 7.3L Powerstroke |
2001 | Ford | 7.3L Powerstroke |
2002 | Ford | 7.3L Powerstroke |
2003 | Ford | 7.3L Powerstroke |
PART NUMBER | MODEL YEAR |
---|---|
25973 | 1999.5-2003 |
25972 | 1999 |
25971 | 1999.5 |
Larger and more effective charge-air coolers increase air density by substantially reducing the temperature of the pressurized air from the turbocharger to the intake manifold. By lowering boost air temperature, the denser air is more oxygenated and allows complete fuel combustion. There is also an excellent byproduct of lower intake air temperatures; they produce lower EGTs. If EGTs never build to the temperature where the computer tuner limits fuel delivery, all of the additional power is always available. Lower EGTs also help to reduce the thermal load on the engine and its cooling system, which keeps them running cooler as well.
With that being said, cooling the air makes it denser and more oxygen rich, improving combustion and engine efficiency. The results of this are more power, better fuel economy and lower EGTs. The amount of HP gained is not specified.
Well-engineered charge-air cooler cores and end tanks with greater airflow also reduce pressure loss, which improves air density further. Within some factory charge-air coolers, the airflow inside is so poor that some cooling passages don’t even get used. In turbo-speak, charge-air cooler effectiveness is measured by its percentage of increase of temperature recovery as compared to ambient air temperature.