Magnaflow Catback System Installation Guide (86-93 Mustang LX, 86 GT, 93 Cobra)

The below installation instructions work for the following product:

Magnaflow Catback System (86-93 Mustang LX, 86 GT, 93 Cobra)

Here at American Muscle, we're all about DIY (do it yourself). Of course, there's nothing wrong with seeking out a little bit of tech help prior to taking on an installation on your own. Our Mustang installation guides will provide valuable instructions and hopefully answer any how-to questions that you may have along the way.

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Please read through the instructions carefully before starting this project.  Take the time to get all the materials together as well as all the safety equipment.

When working on, under or around any vehicle, exercise caution. Please allow the vehicle's exhaust system to cool before removal, as exhaust system temperatures may cause severe burns. If working without a lift, always consult vehicle manual for correct lifting specifications. Always wear safety glasses and ensure safe work area. Serious injury or death could occur if safety measures are not followed.

Installation:

1. Disconnect the vehicle's battery before removal of the OEM exhaust. This will allow the computer to reset itself with the new system and prevent electrical accidents. To begin removal of your OEM exhaust system you will need to cut the tail-pipes just behind the mufflers. Remove the tail pipes from the rubber insulators. Do not discard or damage the OEM fasteners or rubber insulators, as they will be reused to mount the new system. Unbolt the extension pipes from the H-pipe and remove the mufflers in a similar fashion.









2. Remove the existing muffler mount brackets, and replace them with the new brackets supplied in the kit. Do not discard the OEM mount fasteners, as they will be re-used. Refer to diagram #2 for installation of the new muffler mounts.







3. Starting at the H-pipe, begin installing your new exhaust system by bolting up the front extension pipes with the flanges supplied in the kit and the OEM fasteners. Leave all clamps and fasteners loose for final adjustment of the complete system. Working rearward, install the mufflers, and tail pipes using the supplied clamps. Install the tips using the supplied clamps, hangers and 8mm set-screws to lock the tips to the hangers.
   
   
4. Adjust all components for clearance of the frame, bodywork, and overall aesthetics. (MANGAFLOW recommends at least 1/2" of clearance between the exhaust tips and the rear fascia to avoid heat related body damage or fire.) Once a final position is chosen, tighten all hardware from front to rear, including H-pipe hardware, all U-clamps, exhaust tip clamps and exhaust tip slide hangers. The supplied band clamps must be VERY tight to properly align the pipes and prevent leaks (Approximately 65 ft-lbs). U-bolt clamps should be tightened to approximately 30-35 ft-lbs. Inspect all hardware after 25-50 miles of operation, and re-tighten if necessary.