79 Series Landcruiser Twin Exit DPF Back Performance Exhaust. Performance gain: 8KW / 26NM. 79 Series Landcruiser that not only creates a great note but also extracts more power* The 79 Series Landcruiser Performance Exhausts are one of the thickest mandrel bent systems available in Australia; the thickness combined with a high grade stainless steel produces a deep note and guarantees extreme strength.