1. Set your car on either a lift or jack stands, a lift is highly recommended if it is available to you.
2. Lay out Pypes dual exhaust underneath car and check that it will fit and has all parts in package.
3. Remove clamp holding muffler to exhaust pipe (15mm)
4. Use 13mm socket to remove the muffler (easiest if you take all 3 hangers off with muffler)
5. Remove exhaust mid pipe by removing band clamp from y pipe(15mm)
6. After all exhaust piping is removed hold the x pipe up to the y-pipe and mark where the y-pipe needs to be cut.
7. Cut y-pipe with pneumatic air saw while wearing a face shield for safety.
8. Fit x-pipe to fit behind the catalytic converters and put clamps on but do not tighten all the way just so that they stay on and in place.
9. Line up and connect the passenger side mid pipe to the x-pipe and slide it into place.
10. Hang up the new muffler using hangers from old one and connect to mid pipe.
11. Make sure muffler tip and box is lined up correctly and is straight.
12. Put driver side mid pipe into place and connect to x-pipe.
13. Line up new muffler with new hangers.
14. May need to thread holes for screws for the new driver side exhaust hangers to ensure snug fit, or self tap them in.
15. Line up muffler again to check for placement on where to cut for new bumper slit.
16. Use template to draw it out, edge of cut is 13 inches from license plate.
17. Start by cutting or marking the edges of cut with sharpie and compare placement to other side.
18. Take your time with this part and start by cutting small and gradually cut bigger.
19. You can use an air saw and shears to cut the bumper slit out.
20. After bumper is cut out place muffler back up and connect to hangers.
21. Before tightening everything down go over all pipes and make sure everything is connected and that the mid-pipe is snug up to the body of the car.
22. After final check go ahead and tighten all clamps and bolts and look over the whole system one more time before lowering.
23. Make sure both mufflers are straight and not tilted to one side because they have a tendency to turn, if so loosen hanger bolts twist muffler and have someone else hold in place while you tighten it.
24. Lower car and start it up make sure it sounds right and you do not hear any weird noises and check to make sure the mufflers are not moving around and are tight in their place.
25. Take for short test drive to make sure nothing is rattling around and that there are no noises being made from underneath the car.
26. After about 50 miles it is suggested that you take another look at the exhaust under the car to ensure everything is still connected and in place, This is highly recommended and should be done around 50 miles if possible.
27. After that enjoy your new dual exhaust for your V-6 mustang.