Time to figure out a new exhaust... Suggestions?
Well, I currently have the Flyin Miata Duals and before the turbo I LOVED their sound. I would like to replicate that type of sound with the turbo.
I am having a new 2.5" exhaust made from the turbo to the tips This will likely start next week. So I have to hurry the heck up and figure out what I am going to put under there. There will be no cat. And nothing of the stock system reused. I do however, want to stay with a dual exhaust look, as the bumper is already cut for it... and I just like how it looks. Any thoughts or suggestions? I know Exhaust sound is subjective.. But I don't want it to be loud, but would love a growl and burble like the FM exhaust had. |
Honestly why 2.5" instead of 3"? Cost difference when diying is marginal, it will help spool, and with a good muffler would not be much louder then 2.5".
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Because from everything I have read the last few weeks, it would suggest that at my targeted power levels a 3 inch exhaust is not only a waste, but a hindrance.
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You suck at reading something terrible then. Try again.
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It wouldn't be the first time.
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3" is better. Ignore power goals, you gain a significant amount of spool.
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bottom line - unless you have a really good/compelling reason not to go 3" (like, you already have a 2.5 or can get one for super duper cheap), you always want 3"
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alright, then, 3" it is.
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Originally Posted by viriiguy
(Post 1312161)
Because from everything I have read the last few weeks, it would suggest that at my targeted power levels a 3 inch exhaust is not only a waste, but a hindrance.
you want a 3" exhaust with the largest straight through muffler you can fit. |
Originally Posted by Braineack
(Post 1312169)
you werent reading on this site then...
you want a 3" exhaust with the largest straight through muffler you can fit. *Bad Randy* Bad Bad!! |
reading m.net is a 100% guarantee for failure and aidz
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Ok, so 3 inch to the axle. Then maybe a magnaflow or vibrant with dual exits
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3" all day.
As far as sound, magnaflow/or knockoff (xlerator) will get you a similar sound as the flying miata kit as well as piece of mind that you are getting the least amount of restriction possible. However, i enjoy the sound of the 40 series flowmaster better. it has more tonal quality over the magnaflow. i would recommend using a resonator with it as it tends to drone. in your particular case if you were interested in running a flowmaster and still keep your duals the 80 series is a transverse muffler will work. the flowmaster is a baffled muffler and does restrict the exhaust a bit but not much, i do notice a difference when running between the two. |
there's no point in doing 3" if youre going to run a redneck muffler.
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There is if you want to "feel the thunder" in your loins...
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Originally Posted by Braineack
(Post 1312217)
there's no point in doing 3" if youre going to run a redneck muffler.
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Magnaflow 5x11x22 is miataturbo recommended muff
https://www.miataturbo.net/attachmen...ine=1414298032 I run the center/offset one, it's a single chamber straight thru. The center/center is a dual chamber, supposed to be quieter. You could do duals still, maybe. This is ARtech stuff, not manly 3" though. http://i21.photobucket.com/albums/b2...ps1hdephza.jpg |
It looks like the Magnaflow 12198 will work. And I will add a resonator to take away some of the highway drone.
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I love my Artech stuff
3" |
My favorite is:
leave the turbo at the same ID as the turbine outlet either cone shape, a 5 to 7 degree, or use a series of shallow swages to reach a dia of 3.0 put the 3.0 end about 10 inches aft of the engine/tranny joint create a 1 into 2 joint (Y) with the two legs of 2.25 each. two 2.25's are bigger than 3. two parallel 2.25 tubes back to the diff, then turn one left and one right. This is the only time in modern society one can turn left in an acceptable manner. add a foot long 2.5 id glass pack to each leg and then out the back. If a drilled core is not available use a punched core and run it backwards. Add a nice pair of tits. |
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