Stock S-197 Mustang Muffler Modifications.
Legacy TMS Member
Joined: August 7, 2006
Posts: 16,113
Likes: 789
From: In Boredom
its louder and has a lower tone i guess. No drone at cruising speed at all and now when I hit the gas at all I hear it better than I did before.
There is some drone if you want to call it that at certain speeds under light acceleration but nothing to complain about. I did go from the auto mufflers to the stick mufflers and the butcher job. I think with these mufflers you can get the sound you want with a little cutting here and there.
There is some drone if you want to call it that at certain speeds under light acceleration but nothing to complain about. I did go from the auto mufflers to the stick mufflers and the butcher job. I think with these mufflers you can get the sound you want with a little cutting here and there.
Legacy TMS Member
Joined: August 7, 2006
Posts: 16,113
Likes: 789
From: In Boredom
I did notice when I was under there that the pipe from the h pipe to the mufflers is labeled aoa also. Man I hate the flat spot in the pipe going over the axle. I supose thats eliminated on most after market cat back systems??
Legacy TMS Member
Joined: August 7, 2006
Posts: 16,113
Likes: 789
From: In Boredom
no pics sorry. I will have a sound clip up soon. I cut my access hole much smaller than you did and the hole I cut on the inside was a little less than thalf the size of what you cut.
Cobra R Member
Joined: October 10, 2004
Posts: 1,627
Likes: 1
From: Location: Indy
Good - I am glad it worked out for you. I made the access hole on the first set I did large since I was not sure how much space I needed. I have since modified another set for a friend and (like you) I made the access hole much smaller.
The key to this whole idea is really trial and error. The Ford engineers that developed the exhaust spent a lot of time tuning it. I think I was lucky to make modifications and still have a decent sound, especially if someone else tries it and is happy. Hmm - That motivates me to try some other ideas I have been kicking around...
The key to this whole idea is really trial and error. The Ford engineers that developed the exhaust spent a lot of time tuning it. I think I was lucky to make modifications and still have a decent sound, especially if someone else tries it and is happy. Hmm - That motivates me to try some other ideas I have been kicking around...
Legacy TMS Member
Joined: August 7, 2006
Posts: 16,113
Likes: 789
From: In Boredom
not the best way to capture sound but what the heck I had some spare time.
http://www.youtube.com/watch?v=AkmmLDnOKAQ
this vid was done with my canon s3 powershot mounted to my rear bumper.
so needless to say quality is a little lame
http://www.youtube.com/watch?v=AkmmLDnOKAQ
this vid was done with my canon s3 powershot mounted to my rear bumper.
so needless to say quality is a little lame
Bullitt Member
Joined: November 22, 2004
Posts: 382
Likes: 1
Muffler
...Yes i have...i cut mine open to do the mod designed by above member RED454...the auto muffler is way more restrictive..i don't have pics..i wound up selling my auto for a stick...the tubes you see in RED454's pics...there is an extra one...it goes end to end in the middle of muffler. also more chambers......i cut out middle tube all together..and opened up the ones he did as well...sounded great IMO...no drone really...especially compared to aftermarket chambered mufflers. I say do it...get yourself an extra set off ebay for cheap...i spent 50.00 bucks on a virtually new set. You will have a unique inexpensive muffler...thanks RED454!
Legacy TMS Member
Joined: October 2, 2006
Posts: 4,777
Likes: 16
From: Southeast Michigan
Here's a clip of my stock manual exhaust:
http://youtube.com/watch?v=5Paa3LuIXmw
http://youtube.com/watch?v=5Paa3LuIXmw
Legacy TMS Member
Joined: August 7, 2006
Posts: 16,113
Likes: 789
From: In Boredom
not the best way to capture sound but what the heck I had some spare time.
http://www.youtube.com/watch?v=AkmmLDnOKAQ
this vid was done with my canon s3 powershot mounted to my rear bumper.
so needless to say quality is a little lame
http://www.youtube.com/watch?v=AkmmLDnOKAQ
this vid was done with my canon s3 powershot mounted to my rear bumper.
so needless to say quality is a little lame
Keep in mind I have an x-pipe
http://www.youtube.com/watch?v=UVF8OLokESc
you can open a window for each vid and run one slightly behind the other.
As soon as I fighre out how I will blend the two vids together
Mach 1 Member
Joined: May 2, 2007
Posts: 563
Likes: 0
ok this is my vid of the stock mufflers.
Keep in mind I have an x-pipe
http://www.youtube.com/watch?v=UVF8OLokESc
you can open a window for each vid and run one slightly behind the other.
As soon as I fighre out how I will blend the two vids together
Keep in mind I have an x-pipe
http://www.youtube.com/watch?v=UVF8OLokESc
you can open a window for each vid and run one slightly behind the other.
As soon as I fighre out how I will blend the two vids together
Bullitt Member
Joined: August 8, 2006
Posts: 353
Likes: 0
From: Good ole L.A.
not the best way to capture sound but what the heck I had some spare time.
http://www.youtube.com/watch?v=AkmmLDnOKAQ
this vid was done with my canon s3 powershot mounted to my rear bumper.
so needless to say quality is a little lame
http://www.youtube.com/watch?v=AkmmLDnOKAQ
this vid was done with my canon s3 powershot mounted to my rear bumper.
so needless to say quality is a little lame
LOL I thought your dog was done for!
Sounds killer.
Legacy TMS Member
Joined: October 12, 2006
Posts: 479
Likes: 3
From: Merritt Island, FL
So if I understand it correctly. You can cut just the top off of the back half of the muffler. Replace the 1.5" tube with a 2.5" hole & tube and then cut another 2.5" hole in the last baffle, welding a second 2.5 tube to that hole. Finally cuttting a hole in the exit tube and sealing up the muffler. Did you attempt to remove the FG from the exit tube?
I'm wondering if just having three 2.5" tubes running from the second to the third chamber would work. In essence cutting the fiberglassed section of the exhaust tube out completely.
B
B
Semper Fi
I'm wondering if just having three 2.5" tubes running from the second to the third chamber would work. In essence cutting the fiberglassed section of the exhaust tube out completely.
B
BSemper Fi
Legacy TMS Member
Joined: August 7, 2006
Posts: 16,113
Likes: 789
From: In Boredom
If you look in the picture you will see a bulge in the exhaust pipe, right before it exits the muffler and connects to the stainless tip. That is actually a double wall area and there is fiberglass packed between the walls.
One of the modifications involved cutting an opening into that pipe, as you can see in this picture. The two walls or layers are visible. There was not much fiberglass, but it was definitely sandwiched in there...
What I did in addition to opening the main pipe was to add a second tube into the resonating chamber. You can see the small tube (1.5 inch diam.) in the pic - I opened a hole into the divider wall and added a 2.5 inch dia. pipe next to the current one. Unfortunately I did not get any pics of the second modification before I welded the covers on.
The mods give the mufflers a deeper, more aggressive tone, with almost no drone.
One of the modifications involved cutting an opening into that pipe, as you can see in this picture. The two walls or layers are visible. There was not much fiberglass, but it was definitely sandwiched in there...
What I did in addition to opening the main pipe was to add a second tube into the resonating chamber. You can see the small tube (1.5 inch diam.) in the pic - I opened a hole into the divider wall and added a 2.5 inch dia. pipe next to the current one. Unfortunately I did not get any pics of the second modification before I welded the covers on.
The mods give the mufflers a deeper, more aggressive tone, with almost no drone.
