Miata Turbo Forum - Boost cars, acquire cats.

Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
-   Prefabbed Turbo Kits (https://www.miataturbo.net/prefabbed-turbo-kits-3/)
-   -   I built an exhaust! (https://www.miataturbo.net/prefabbed-turbo-kits-3/i-built-exhaust-8517/)

Braineack 03-28-2007 10:44 AM

i still dont think anythign beats Loki's fluxcore manifold/DP/piping

miataspeed1point6 03-28-2007 04:49 PM

I have 2 resonanators, no muffler. I'll try to get a sound clip Sunday, it all depends if my Emanage wants to be nice to me. I have yet to hear it under boost, but under normal driving conditions it sounds nice.

Welding is easy, making good welds is hard. I'm going to practice some more. I'd like to weld up something usefull but that wont kill the car if it breaks.

blue89turbo 03-28-2007 10:44 PM


Originally Posted by PaKMaN (Post 96644)
SRT4's don't come with mufflers.

That's right, surprising that they can get away with that on a production car...

zoom2zoom 03-29-2007 01:06 AM

can you do a writeup about where the cuts are, etc?

miataspeed1point6 03-29-2007 02:53 AM

If you can get me a good picture of the stock SRT system I will do my best. I need both the front and rear sections in the picture.

y8s 03-29-2007 09:03 AM


Originally Posted by blue89turbo (Post 96910)
That's right, surprising that they can get away with that on a production car...

actually the SRT4 uses an upstream dynamic exhaust energy reduction device. it dissipates energy (and noise) in the exhaust by converting it to mechanical power.

rmcelwee 03-29-2007 09:18 AM


Originally Posted by miataspeed1point6 (Post 96528)
Made with a 140amp MIG welder, and since I've never welded before...at least it's held together!

I thought they looked great. I am a novice with a welder and I would have just burnt through that thin piping. Good job!

miataspeed1point6 03-30-2007 12:02 AM


Originally Posted by y8s (Post 97003)
actually the SRT4 uses an upstream dynamic exhaust energy reduction device. it dissipates energy (and noise) in the exhaust by converting it to mechanical power.

....Yeah, what he said.


rmcelwee thanks! I thought they were decent, but I don't have much to compare to. I don't see too many hand done welds ever, only machine. I practiced on some extra piping first, I burnt through it like crazy. The guy who owns the welder told me to make zig-zags while going along. I did that and I just found a good pace that didn't burn through. I would love to buy a welder and practice until I am good, it's so much fun.

y8s 03-30-2007 11:05 AM

the trick is to go hotter. I get the best results on exhaust piping (16-14Ga) by cranking up the heat. who doesn't love nice deep penetration?

jayc72 03-31-2007 12:25 AM


Originally Posted by y8s (Post 97357)
who doesn't love nice deep penetration?

Guys in prison.

Trent 03-31-2007 12:37 AM

^ ZING.

my miata has a very similar exhaust setup. I run one resonator and no muffler. It's not as loud as you might think (the turbo really DOES dissipate most of the noise), but it's still a bit loud for my tastes. I intend to weld on a muffler one day.

cjernigan 03-31-2007 03:10 AM


Originally Posted by supersaiyan93 (Post 97598)
^ ZING.

my miata has a very similar exhaust setup. I run one resonator and no muffler. It's not as loud as you might think (the turbo really DOES dissipate most of the noise), but it's still a bit loud for my tastes. I intend to weld on a muffler one day.

My roommates N/A 1.6 is louder with a cat and straight through resonator than my car is open downpipe. His is so loud we wear ear plugs on long road trips. I would drive my car open downpipe before his anyday.

Exhondaman 03-31-2007 04:33 AM


Originally Posted by Braineack (Post 96714)
i still dont think anythign beats Loki's fluxcore manifold/DP/piping

Ooooh, I would LOVE to see that.

akaryrye 03-31-2007 04:56 AM

I am another one with no muffler. I am running a 14" long 3" diameter louvered resonator and a Cat. Most of my buddies are surprised at how quiet it actually is. Its not quiet but not really loud.

y8s 03-31-2007 11:40 AM


Originally Posted by jayc72 (Post 97596)
Guys in prison.

haha maybe not ALL guys in prison?

:dancegay:

NotYourAverage 03-31-2007 08:56 PM

looks pretty decent

Mouglie 04-01-2007 12:25 AM

is it all pipe or is there a muffler somewhere in there?
*edit* just read through all the thread, lol...

pic of the resonator and louvers or BAN!!! hahaaa...

Arkmage 04-01-2007 03:27 PM

sound clip / youtube?

miataspeed1point6 04-02-2007 01:52 AM

I'm trying to get one. I don't have a video camera, but my girlfriend does. I just need to get to her house. I planned to get it tonight, but the Emanage doesn't want to be nice to me and let the car run. I'll get it as soon as I can.

miataspeed1point6 04-17-2007 10:30 PM

Well it isn't the best, but it was the only video I could make. At idle it sounds exactly like it does in real life. However while its revving in real life it is deeper. I'm pretty sure its just the cameras mic not being able to handle the volume. It's just a Cannon Powershot A540. Anyway, to the good part, my SRT-4 exhaust cut up and stuck under my Miata!

http://s6.photobucket.com/albums/y22...t=MVI_0777.flv


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