Another custom Magnaflow muffler option 11366 or 14363
10-05-17, 09:12 AM
#1
Driver School Candidate
Thread Starter
Another custom Magnaflow muffler option 11366 or 14363
I have had the ISF for 6 months and am now ready for some more rumble. I have read numerous posts were people have many issues with fitment of aftermarket mufflers such as Magnaflow or Borla. Most of the muffler bodies are 20inches overall and the body is 14 inches. Most people say it barely fits but can be made to work. I was seeing if anyone had any experience with the magnaflow 14363 (polished) or 11366 (satin finish) 4x9 oval muffler. It has a slightly shorter Oval body at 17inches overall with a body of 11 inches. I currently have deleted second cats and mid resonator. The whole mid pipe was changed and I am not sure what brand. The mid pipe does have two small resonators.
The main reason if this post is to document my fitment and to see if others have any experience with this specific muffler.
The main reason if this post is to document my fitment and to see if others have any experience with this specific muffler.
10-24-17, 03:55 PM
#3
Former Sponsor
Hi Neggert, thanks for your interest in Magnaflow products. We cannot confirm if those units will fit since we have not yet tested them with your application, but they are rather small and should work when in the hands of a capable exhaust shop. We commonly use the larger 4x9x14" for most muscle car and sport compact applications and rarely run into issues with space. Please keep us updated with your progress!
10-24-17, 04:33 PM
#4
Driver School Candidate
Thread Starter
Hi Neggert, thanks for your interest in Magnaflow products. We cannot confirm if those units will fit since we have not yet tested them with your application, but they are rather small and should work when in the hands of a capable exhaust shop. We commonly use the larger 4x9x14" for most muscle car and sport compact applications and rarely run into issues with space. Please keep us updated with your progress!
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Magnaflow (10-26-17)
10-25-17, 06:35 AM
#5
I can tell you what I know from my Magnaflow install...
I used the 12226. If I did it again I'd go the same length muffler, but large and round. I'd go with the 12616 6" round mufflers. The mufflers I had barely fit and had to be twisted just right, but did work out. The sound had a little more rumble than stock. If you want louder, go with a smaller muffler. If you're doing headers, then stick with something this big, trust me on that. What really made it around 3x as loud was the PPE headers. With just the mufflers it wasn't near the volume, but the sound was awesome. I did cut and redo the Y pipe as it's very inefficient and all piping from there back.
PPE with Magnaflow
Magnaflow only
I used the 12226. If I did it again I'd go the same length muffler, but large and round. I'd go with the 12616 6" round mufflers. The mufflers I had barely fit and had to be twisted just right, but did work out. The sound had a little more rumble than stock. If you want louder, go with a smaller muffler. If you're doing headers, then stick with something this big, trust me on that. What really made it around 3x as loud was the PPE headers. With just the mufflers it wasn't near the volume, but the sound was awesome. I did cut and redo the Y pipe as it's very inefficient and all piping from there back.
PPE with Magnaflow
Magnaflow only
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Magnaflow (10-26-17)
10-25-17, 12:10 PM
#6
Driver School Candidate
Thread Starter
I must have listened to your YouTube video 100 times before I bought my mufflers. It sounds amazing. I will likely never buy headers. Thanks for the reply.
I can tell you what I know from my Magnaflow install...
I used the 12226. If I did it again I'd go the same length muffler, but large and round. I'd go with the 12616 6" round mufflers. The mufflers I had barely fit and had to be twisted just right, but did work out. The sound had a little more rumble than stock. If you want louder, go with a smaller muffler. If you're doing headers, then stick with something this big, trust me on that. What really made it around 3x as loud was the PPE headers. With just the mufflers it wasn't near the volume, but the sound was awesome. I did cut and redo the Y pipe as it's very inefficient and all piping from there back.
PPE with Magnaflow
https://www.youtube.com/watch?v=FuUfTLrcwZ8
Magnaflow only
https://www.youtube.com/watch?v=twRbLaccOB0
I used the 12226. If I did it again I'd go the same length muffler, but large and round. I'd go with the 12616 6" round mufflers. The mufflers I had barely fit and had to be twisted just right, but did work out. The sound had a little more rumble than stock. If you want louder, go with a smaller muffler. If you're doing headers, then stick with something this big, trust me on that. What really made it around 3x as loud was the PPE headers. With just the mufflers it wasn't near the volume, but the sound was awesome. I did cut and redo the Y pipe as it's very inefficient and all piping from there back.
PPE with Magnaflow
https://www.youtube.com/watch?v=FuUfTLrcwZ8
Magnaflow only
https://www.youtube.com/watch?v=twRbLaccOB0
10-25-17, 01:13 PM
#7
Driver School Candidate
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I did a custom setup using Magnaflow also. I had the OEM "Y" section removed and a custom one made with flanges for the mufflers. I have two sets of mufflers 4in round PART # 14156 and the 6in round PART # 14158. Depending on what kinda of mood I'm in I can switch mufflers for different volumes. I picked this type because they hide behind the fake tips, even painted the black too
. As far as sound the 4in are the louder ones. 6in are louder than stock when your having fun but easy on the ears when chillin on the highway.
Good Luck!
. As far as sound the 4in are the louder ones. 6in are louder than stock when your having fun but easy on the ears when chillin on the highway. Good Luck!
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10-25-17, 01:43 PM
#8
I did a custom setup using Magnaflow also. I had the OEM "Y" section removed and a custom one made with flanges for the mufflers. I have two sets of mufflers 4in round PART # 14156 and the 6in round PART # 14158. Depending on what kinda of mood I'm in I can switch mufflers for different volumes. I picked this type because they hide behind the fake tips, even painted the black too. As far as sound the 4in are the louder ones. 6in are louder than stock when your having fun but easy on the ears when chillin on the highway.
Good Luck!
. As far as sound the 4in are the louder ones. 6in are louder than stock when your having fun but easy on the ears when chillin on the highway.Good Luck!
10-26-17, 11:06 AM
#10
Former Sponsor
These smaller 11366 mufflers fit fantastic. The muffler shop had much more room to play with. No rubbing issues anywhere. The sound is perfect in my opinion. Not overly loud at all with a very noticeable growl now. I just yall made this same offset muffler with the dual tip.
I can tell you what I know from my Magnaflow install...
I used the 12226. If I did it again I'd go the same length muffler, but large and round. I'd go with the 12616 6" round mufflers. The mufflers I had barely fit and had to be twisted just right, but did work out. The sound had a little more rumble than stock. If you want louder, go with a smaller muffler. If you're doing headers, then stick with something this big, trust me on that. What really made it around 3x as loud was the PPE headers. With just the mufflers it wasn't near the volume, but the sound was awesome. I did cut and redo the Y pipe as it's very inefficient and all piping from there back.
PPE with Magnaflow
https://www.youtube.com/watch?v=FuUfTLrcwZ8
Magnaflow only
https://www.youtube.com/watch?v=twRbLaccOB0
I used the 12226. If I did it again I'd go the same length muffler, but large and round. I'd go with the 12616 6" round mufflers. The mufflers I had barely fit and had to be twisted just right, but did work out. The sound had a little more rumble than stock. If you want louder, go with a smaller muffler. If you're doing headers, then stick with something this big, trust me on that. What really made it around 3x as loud was the PPE headers. With just the mufflers it wasn't near the volume, but the sound was awesome. I did cut and redo the Y pipe as it's very inefficient and all piping from there back.
PPE with Magnaflow
https://www.youtube.com/watch?v=FuUfTLrcwZ8
Magnaflow only
https://www.youtube.com/watch?v=twRbLaccOB0
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