2005 Mustang GT American Racing Headers Install - Waiting To Exhale
MagnaFlow also supplied a universal 3-inch x pipe system that allowed us to connect the American Racing headers to the MagnaFlow after-cat. After the installation of the exhaust components, the peak power numbers jumped to 802 hp and 714 lb-ft of torque. This test is a perfect example of why we include graphs (not just peak numbers), as the exhaust upgrades improved power production throughout the rev range with a maximum gain of 62 hp and 60 lb-ft of torque at 5,400 rpm. While we changed two components at once for this test, the huge gains in the midrange certainly indicate the scavenging effect produced by the long-tube headers was present and accounted for.