Muffler Size
Time for a new muffler. I have been perusing the Magnaflows on Magnaflow Performance | Discount Performance Auto Parts | Performance Exhaust Systems | Flowmaster Performance Mufflers site and trying to decide which size. I'm running a 2 1/2" exhaust.
From the looks of things, it appears that I will be using a 5x8 oval. It is available in 14" and 18" body length, 20 or 24 OAL. What is the easiest to FIT, center in center out?, offset in/out? From some photos in other threads, it looks like the 14" body, center in/out would fit well. I want quiet, though, at cruise. I'm guessing the 18" body will be significantly better in that regard over the 14". I also am assuming that center in/out has to flow better than offset in/out just because of the golfball test. Do the offset Magnaflows flow as well as center in/out? Are offset good enough and possibly quieter than center in/out when comparing Magnaflow to Magnaflow? I want to do this right and do it once. The car will eventually end up around 10 PSI. |
Your original muffler thread has a lot of good info in it. I still think the giant magnaflow <12578> I used is the way to go. And the offset/offset makes it possible. It's a little louder now on full throttle, but still quiet at cruise. Offset/offset has the better flow in my installation since it provides less curve to get into the muffler and back out.
|
GET THE BIG MOTHER.
you'll thank me. ask braineack. he rode in my car on sat and wouldn't shut up about the exhaust. |
The offset mufflers will still pass a golf ball. They turn mount the tube diagonally.
Not real sure about the internal construction of the split ones though. (single to dual) |
Originally Posted by m2cupcar
(Post 398569)
Your original muffler thread has a lot of good info in it. I still think the giant magnaflow <12578> I used is the way to go. And the offset/offset makes it possible. It's a little louder now on full throttle, but still quiet at cruise. Offset/offset has the better flow in my installation since it provides less curve to get into the muffler and back out.
|
Yes. Or why not? IF you ever decided to go up on the exhaust size pre muff you'd have the muff to match. And it's not going to hurt to have it larger. Besides, we already know the 3" is hush with a full 3" exhaust.
|
Originally Posted by Joe Perez
(Post 398582)
The offset mufflers will still pass a golf ball. They turn mount the tube diagonally.
Not real sure about the internal construction of the split ones though. (single to dual) http://systemstrategies.com/miata/ex...053008_010.jpg |
OK, I'm convinced. Ordering MAGNAFLOW MUFFLER 6" X 12" 22" BODY 3" O/O 12578 today. Maybe it will smooth out my jumpy MAP pressures at the upper RPMs. Magna thought it could be from excessive backpressure and it is distinctly possible with the old Flowmaster.
|
Originally Posted by y8s
(Post 398578)
ask braineack. he rode in my car on sat and wouldn't shut up about the exhaust.
Originally Posted by Stein
(Post 398589)
Even with the 2 1/2" exhaust, transition it up to the 3" unit?
|
you might need to upgrade the mid pipe while yer in there. wink wink.
|
My magnaflows are center/offset to match up with the entry and exit bends better. Also I went with resonated tips to help keep her quiet under cruise. Works like a champ; sounds awesome at heavy loads but under cruise isn't loud and doesn't drone.
|
I went from a flowmaster type muffler to a cheap POS turbo style muffler and got improved flow (quicker spool). Word is that the chambered mufflers are bad for turbo'd cars.
FWIW - Enthuza (the original owner) was stepping up their muffs a 1/2" in diameter from the preceding pipe dia. because it showed better spool on the dyno (and better sound at the exhaust). |
Originally Posted by m2cupcar
(Post 398754)
FWIW - Enthuza (the original owner) was stepping up their muffs a 1/2" in diameter from the preceding pipe dia. because it showed better spool on the dyno (and better sound at the exhaust).
|
Originally Posted by Ben
(Post 398638)
Also I went with resonated tips to help keep her quiet under cruise. Works like a champ; sounds awesome at heavy loads but under cruise isn't loud and doesn't drone.
|
2 Attachment(s)
Originally Posted by Chris Swearingen
(Post 398597)
Mine is 3" center in, offset out. And it will pass the golf ball test.
Attachment 206531 Attachment 206532 Mine is for a car making at least 300 at the wheels though..I'm not sure anything more than 2.75" is necessary for most MT setups. Either way, bigger is better for case size. Magnaflows are all straight through so they flow nice, IMO they sound the best, and a bigger case should muffle more. |
ansa silverline > *
|
Thanks. I looked at the Silverline stuff this evening, also Monza. I did not see anything with a 3" inlet, resonated, that would work lengthwise.
|
Originally Posted by ZX-Tex
(Post 398875)
Thanks. I looked at the Silverline stuff this evening, also Monza. I did not see anything with a 3" inlet, resonated, that would work lengthwise.
I'll make a vid of my car for you this weekend. |
Hustler just to be sure are you talking resonator tips or mufflers? I'm looking for a tip I could add to the existing system to make it a little quieter.
|
How much do resonated tips actually do anyways? I always thought they were just expensive flashy add-ons.
|
All times are GMT -4. The time now is 12:56 AM. |
© 2024 MH Sub I, LLC dba Internet Brands