While changing my diff fluid I decided to get rid of the stock junker muffler. I Plan on getting an MBRP cat back down the road but this was a $21.49 investment with a surprisingly good outcome.
x1 2.5" exhaust clamp -$2.50
x1 2.5" 45 degree pipe -$5.99
x1 2.5" x 48" long straight pipe with single side coupling-$7.50
x1 JB Weld classic (good to 600deg F)-$5.50
-15mm spark plug socket
-(any size ratchet driver)
-Hacksaw/metal jig/cut-off grinder wheel
-A strong table mounted vise is handy
1) Use 15mm socket to loosen stock muffler clamp, give it a whack or two to shake off the mud/accumulated crap
2) Use a combination of screwdrivers, grease if you have it, and swearing to pry off muffler from rubber hangers - remove muffler and set aside. DO NOT be tempted to salvage the clamp from the stock muffler, it is welded in place, I drilled the spot weld and it still did not come off- just buy the new 2.50 clamp...much easier.
3) mock up exhaust pieces together and position the elbow on exhaust outlet above rear axle. Decide how you want your outlet pipe to be positioned, I chose a left-swept out. Mark your cut-off with a sharpie, the pipe will extend past the bumper, it's unsightly and puts unnecessary strain on the only hanger position in front of the axle, take the time to hack off the extra length.
4) Grind/polish the exit of the elbow for a clean JB weld surface, it will also make the straight pipe coupling slide on a little easier.
5) Apply JB Weld liberally to the elbow exit, hold the elbow in a table vise (or between your feet on the ground) and hammer the straight pipe coupling over the elbow until it has fit completely. Inspect the JB weld and make sure the pipes are completely sealed together. Allow JB weld to set-up for at least 25min before continuing to work.
6) Mock exhaust clamp onto elbow coupling, most clamps will use the same 15mm nut, fit elbow on to stock exhaust outlet, position how you would like, and clamp. Some may swear by muffler/gasket sealant but I don't have even the slightest fume/liquid leak on the pipe, if you feel the need go for it.
If you want a straight pipe out you will need to bend the elbow ~5-15deg depending on what rear bumper system you have in place, best way to do it is with a mandrel but a vise and pry bar will also work.
Sorry about the lack of pics, I only have finished photo.
I'll spray coat it black sometime next week after it's been burned in and I'm sure the JB has set. It sounds a little gurgly but not too loud or obnoxious. Without the muffler there's a small loss in back-pressure, no noticeable difference in performance but mufflers rarely have any on naturally aspirated gas cars. Sounds nice, cheap, and easy.