2007-2009 GT500 5.4L Shelby Performance Tune Model_Silhouette This is necessary because the

This is necessary because the key will be on for 30+ minutes

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2007-2009 GT500 5.4L Shelby Performance Tune Model_Silhouette This is necessary because theWe can make adjustments for various engine modifications as well as engine swaps. HP and Torque increases for a stock bolt on engine will be similar to the following2007 2009 GT500 5. 4L Shelby 57 RWHP 39 ft lbs YOUR COMPUTER WILL BE ADJUSTED PER YOUR VEHICLE SPECIFICATIONS TO GET THE MOST OUT OF YOUR VEHICLE. INSTRUCTIONS: 1. PURCHASE THE SERVICE FROM US AND COMPLETE PAYMENT. AFTER PURCHASE YOU WILL HAVE AN ORDER NUMBER. PLEASE SEND A PRINTOUT OF THE