2007-2009 GT500 5.4L Shelby Performance Tune

We 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 following

2007-2009 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 EMAIL SENT TO US OR INCLUDE YOUR ORDER NUMBER ON A WRITTEN PIECE OF PAPER WITH ALL OF YOUR CONTACT INFORMATION.  THIS LETS US KNOW WHEN YOU SEND US THE COMPUTER THAT IT IS YOURS AND LETS US MATCH IT UP WITH YOUR ORDER.  IF THERE ARE ANY ADDITIONAL MODIFICATIONS THAT YOU WISH TO HAVE DONE TO THE COMPUTER PLEASE INCLUDE THEM IN THE NOTES AT CHECKOUT AS WELL AS IN THE BOX WHEN YOU SEND THE COMPUTER TO US.  

2. BOX UP THE COMPUTER (PACK IT WELL)  ALONG WITH YOUR INFORMATION MENTIONED IN STEP 1 AND SEND IT TO THE FOLLOWING ADDRESS. 

GARRETT TUNING

17 10TH ST. SW

BARBERTON OH 44203

3. WE WILL SEND THE COMPUTER BACK TO YOU, READY TO INSTALL

THERE ARE NO RETURNS OR REFUNDS ON THIS SERVICE ONCE IT IS PURCHASED.