In most instances, the factory EGR system works during low to medium throttle and stops on full-throttle/high-demand driving. The difference without the EGR was noticed almost instantly as we came to our first hill. We were driving about 70 miles per hour between 1,800 to 2,000 rpm, and the truck lugged a little to get up the hill. But it didn't downshift. Normally, the truck would drop a gear to make it up this hill. In addition to having more low-end power, the exhaust temperatures dropped between 50 to 150 degrees.
Another wonderful advantage of this upgrade is the lack of soot entering into our intake. Typically, soot builds up on the intake radiuses, which causes turbulence and eventually a reduction in horsepower. The soot also ends up getting into the engine oil. As the soot particles mix with the engine oil and eventually find their way through the engine oiling system, the tiny little particles cause the engine bearing to wear faster.
After we were done with our off-road testing, we were pleased to note that our 6.0L test truck never missed a beat. Best of all, we can now run the truck hard without the worry of boiling coolant or blowing headgaskets.
When looking at the EGR cooler next to the bypass kit, you can see that it is laid out pretty well. Liberator Performance has taken into account all of the key components such as routing the coolant and blocking off the EGR. | 
Before putting everything back together, we removed the O-ring from the EGR cooler and installed it on the bypass. Then, we made sure to lube all of the O-rings with new oil. | 
We installed the coolant pipe, exhaust plug, and intake manifold/coolant pipe holder. We made sure to reuse the gaskets between the exhaust and the plug, as well as the one between the intake manifold/coolant pipe holder and manifold. |
We made sure both intake gaskets were in place and that nothing had fallen down between the manifold and the intake. Next, we worked the manifold down into place and tightened it. | 
We then installed the turbo pedestal and oil drain line. Again, we made sure to lube the O-rings with new oil (arrow). | 
Finally, we reinstalled the turbo, intake, and coolant reservoir. After the reservoir was reinstalled, we filled the system with coolant. All that was left to do was start the vehicle and let it idle so we could check for leaks. |