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Help Save MoneyIn addition, an EGR delete can also help you save money on some costly repairs. The EGR, if damaged, can be quite costly to repair and replace. An EGR delete removes the possibility of such damage, thereby saving your money. If your DPF is plugged up your probably averaging about mpg. After installing the SCT X4 / Bully Dog BDX and deleting the DPF/CAT expect to get a combined mileage of mpg. Larger tires and poor driving habits will skew mileage downward. Delete pipes and exhaust may require ret