How To Install a JBA Catback Exhaust on your 2011-2014 GT Mustang

** Installation recommendation: JBA recommends in most case that the vehicle be taken to a reputable exhaust shop for installation. 

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2011 Mustang 5.0 GT

3” Dual exhaust to stock H Pipe 

1. Remove and inventory the JBA Exhaust System. 

2. Disconnect the negative battery cable and allow the exhaust system to completely cool. 

3. Loosen the clamps attaching the exhaust to the stock H Pipe assembly. Slide the clamp back to separate the two. 

4. Loosen the clamp connecting the exhaust pipe to the muffler. Wiggle the exhaust pipe free from the muffler. Remove the exhaust pipe from car. You may have to jack the car up by the frame to get the pipes out from over the axle. 

5. Using pliers or a pry bar, slide the rubber hanger from the hanger rod at inside, front of muffler (a little lube helps). Slide the muf- fler assembly forward and remove from slip hangers. 

6. Slide the JBA muffler/tip assem-blies hangers into the rubber isola- tors on each side. WD40 or similar will make this easier. 

7. Install the new over axle pipes. Slide the original clamps over the pipe to hold in place but do not tighten. Slip the 3” Sure Seal™ clamps onto each pipe, then insert into muffler/tip assemblies . 

9. With the axle pipes in the muffler assemblies adjust muf-flers to be flat, and the tips an equal distance from the bumper cover, Then tighten all clamps securely. 

10. Using a soft cloth, wipe the new JBA tips clean.

11. Reconnect the battery and start the vehicle to check for leaks.

NOTES:

1.) All exhaust systems expand about 1” rearward whent exhaust temperature rises. 

To get more power out of your Mustang, JBA offers long tube headers-headers and high flow h-pipes for the 5.0L. For more information about these and other quality performance products from JBA visit us online at www.jbaheaders.com 

Sutton High Performance - 2005 Mustang 4.6L - Vortech supercharger Horsepower - 665rwhp • 1/4 Mile - 9.82 @ 136 mph 

Vortech Superchargers - 2005 Mustang 4.6L 3v Horsepower - 575 • Top speed - 192 mph 

JBA recommends taking the vehicle to a muffler shop and having all slip connections tack welded.