Installation of the BPD enhanced replacement EGR cooler upgrade and oil cooler upgrade takes a whole weekend for the average enthusiast. It requires removal of the intake manifold, turbo, and factory components to be replaced. You'll also need to loosen the up-pipe-to-exhaust manifold bolts located between the engine block and firewall. Remember, this is surgery, so keep everything as clean as possible. If you decide to pay a good diesel mechanic to have it done, you're looking at a seven-hour job ($500 to $800 for labor).