Dpf filter is a constant issue on maxxforce engines. dpf regens happen all the time, they last quite long, and burn extra fuel. maxxforce dpf delete tuning will cancel the entire regen system & you will be able to straight pipe your exhaust. Egr causes excessive soot build up in intake manifold. turbo gets sticky, and no longer moves as agile as it did when it was clean. all that affects your engine life & performances. with maxxforce egr delete tuning, your egr valve & sensors will be รขโ‚ฌยฆ