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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
Taking the Cats off will help it should add some HP and TQ and will make it louder, its also illegal...in all states i think
Not to be mean but your wrong getting rid of the cats will gain you HP but you will lose soem TQ bc you are losing back pressure thats why or cars stock had so much TQ is bc Ford restricted the air and had a lot of back pressure hint 4 cats to make the TQ so high. To gain the TQ back you will have to change the rear gears