The '03 Cobras tend to dyno between 350 to 360 hp and lb-ft of torque fresh out of the box--pretty stout considering that the exhaust systems are heavily muffled to pass the stringent federal noise regulation requirements.The '03 Cobras tend to dyno between 350 to 360 hp and lb-ft of torque fresh out of the box Amazon Racing caters specifically to the '03 Cobras and offers its line of custom press-on pulleys priced as low as $70. Amazon has also designed its own heavy-duty steel puller...Amazon Racing caters specifically to the '03 Cobras and offers its line of custom press-on ...Another option is to go with the interchangeable upper pulley kit, which features a steel inner hub with a quick-removal aluminum outer ring and with three pulley sizes for only $199....Another option is to go with the interchangeable upper pulley kit, which features a ste Although the factory utilizes a fairly large twin-bore throttle body featuring 57mm bores, all '03 Cobras can benefit from the larger single-blade throttle-body and plenum like this AccuFab unit (PN CTB 2003). Constructed out of billet alminum, the larger throttle body includes all the necessary vacuum tubes, can flow close to 1,700 cfm, and increases power levels by 25 hp and 26 lb-ft of torque. Best of all, installation can be handled with minimal tools and be completed in under half an hour.Although the factory utilizes a fairly large twin-bore throttle body featuring 57mm bores, Stock Cobras generally produce between 8 to 10 psi of boost straight out of the factory. However, by simply removing the factory pulley and belt cover (arrow) and swapping the stock pulley with a smaller aftermarket piece, boost levels can be increased by an additional 2 to 7 psi, with the latter amount of boost being required for the staggering 500 rear-wheel horsepower numbers.Stock Cobras generally produce between 8 to 10 psi of boost straight out of the factory. H One of the more critical factors is having the proper tune for the higher horsepower levels. Amazon Racing offers a performance DiabloSport Deltachip with a custom tune that ensures optimum air/fuel ratio for only $359. It doesn't stop here; you can also opt for a dual-tune Deltachip to switch between a street tune and a more aggressive tune for the strip.One of the more critical factors is having the proper tune for the higher horsepower level « | 1 | 2 | 3 | » | View Full Article By Courtesy of the manufacturers Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!
