FINALLY, pics of my 2.5" exhaust... - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Prefabbed Turbo Kits A place to discuss prefabricated turbo kits on the market
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools
Old 09-27-2006, 02:56 AM   #1
Senior Member
Thread Starter
 
Join Date: May 2006
Posts: 884
Total Cats: 0
Default FINALLY, pics of my 2.5" exhaust...

After much stalling, cutting, and welding the exhaust is complete. Here's a couple of pics of the muffler in and out of the car.

If you're at work and cannot see the pics, it's because the server I'm hosted from isn't the most work friendly server. Not a **** server or anything.

I intentionally made it a bit longer than stock, but I think I need to trim another inch or so off.



And here it be outside the car.



I'll post more tomorrow since I just bolted everything up about an hour ago. I'll also be posting a video hopefully with a short run down the block so you can get an idea of what it sounds like. Tomorrow night that is.

And no make-a-da-fun of my messy garage!
firedog25 is offline   Reply With Quote
Old 09-27-2006, 10:53 AM   #2
Elite Member
iTrader: (9)
 
Join Date: Aug 2006
Location: Concord, North Carolina
Posts: 4,173
Total Cats: 5
Default

Nice...I see bounty...paper plates...forks...where is the microwave...its obvious you live out there now heh.

I like it, I'd trim an inch...inch and a half...MAYBE 2. But it looks good...can't wait to see how it sounds
miatamania is offline   Reply With Quote
Old 09-27-2006, 04:39 PM   #3
Senior Member
iTrader: (1)
 
Join Date: Mar 2006
Location: Tucson "it's 110" Arizona
Posts: 1,017
Total Cats: 0
Default

Quote:
Originally Posted by firedog25 View Post
After much stalling, cutting, and welding the exhaust is complete. Here's a couple of pics of the muffler in and out of the car.

I intentionally made it a bit longer than stock, but I think I need to trim another inch or so off.

I'll post more tomorrow since I just bolted everything up about an hour ago. I'll also be posting a video hopefully with a short run down the block so you can get an idea of what it sounds like. Tomorrow night that is.
Sweetness. Did you fab a catback or just the "axleback?" Looks good to me, like you said a little trim and it'll be good to go.

I'll be watching for the vids.
UofACATS is offline   Reply With Quote
Old 09-27-2006, 06:43 PM   #4
Senior Member
Thread Starter
 
Join Date: May 2006
Posts: 884
Total Cats: 0
Default

It's from the downpipe back. I was totally slacking when it came to the picture documentation when we were fabbing it up! I'll take pics of the WHOLE shebang asap, but check back later tonight for the other pics and video/sounds!
firedog25 is offline   Reply With Quote
Old 09-27-2006, 07:53 PM   #5
Junior Member
iTrader: (2)
 
Join Date: Jul 2006
Posts: 482
Total Cats: 0
Default

sweet, whats the total cost of materials?
rappadan is offline   Reply With Quote
Old 09-27-2006, 08:02 PM   #6
Senior Member
Thread Starter
 
Join Date: May 2006
Posts: 884
Total Cats: 0
Default

About the same as if I had bought from Enthuza, but I also got a cat, so for the cat back probably about $100 or so less than the Enthuza. I didn't have the exhaust routed out the rear at first, melted a side marker housing to pay for it. It's pretty loud, possibly not within the 95db spec. It's also really burly sounding, like a big 6.
firedog25 is offline   Reply With Quote
Old 09-27-2006, 08:41 PM   #7
Senior Member
iTrader: (1)
 
Join Date: Mar 2006
Location: Tucson "it's 110" Arizona
Posts: 1,017
Total Cats: 0
Default

Quote:
Originally Posted by firedog25 View Post
It's from the downpipe back. I was totally slacking when it came to the picture documentation when we were fabbing it up! I'll take pics of the WHOLE shebang asap, but check back later tonight for the other pics and video/sounds!
Nice! This would help me much.
UofACATS is offline   Reply With Quote
Old 09-27-2006, 09:36 PM   #8
Elite Member
iTrader: (9)
 
Join Date: Aug 2006
Location: Concord, North Carolina
Posts: 4,173
Total Cats: 5
Default

Quote:
Originally Posted by firedog25 View Post
About the same as if I had bought from Enthuza, but I also got a cat, so for the cat back probably about $100 or so less than the Enthuza. I didn't have the exhaust routed out the rear at first, melted a side marker housing to pay for it. It's pretty loud, possibly not within the 95db spec. It's also really burly sounding, like a big 6.
uh oh...where did you have it dump at first? When I get the turbo on I'm thinking about just letting it dump right behind the rear axle where the pipe connects to my muffler...bad idea?
miatamania is offline   Reply With Quote
Old 09-27-2006, 11:51 PM   #9
Senior Member
Thread Starter
 
Join Date: May 2006
Posts: 884
Total Cats: 0
Default

Quote:
Originally Posted by miatamania View Post
'm thinking about just letting it dump right behind the rear axle where the pipe connects to my muffler...bad idea?
Nail on the head. It's a HORRIBLE idea. I ran that way for a couple of days, then put the muffler on, then routed it back out the rear of the car. It sucks mufflerless, it's embarassingly loud. With just the muffler on it's still loud as hell because the sound resonates from under the car and right to your brain. With the routing back out the rear it's damn near stock, but kind of like stock with pubes.

My digital camera only does video, no audio, how lame is that? I'll see what I can get done soon enough. Anyways, here's another angle.




Also, here's a couple of shots of my modified FM heatshield.





Yes, I welded a fitting into the O2 sensor bung and put my EGT probe in there. I relocated the O2 sensor further downstream, well, my friend Ted did. Anyways, on the heatshield, I figured I spent the money on the damn thing, might as well modify it to fit with everything on it. I simply drilled out the spot welds on the rear part and the panel dropped out. No muss, no fuss... except the bit I used was a tad dull. Fits like it was born there now. I'm going to put some temperature resistant material on the hood too, it still gets hot enough to cook on. More detailed pics to come.
firedog25 is offline   Reply With Quote
Old 09-28-2006, 12:16 AM   #10
Senior Member
iTrader: (1)
 
Join Date: Mar 2006
Location: Tucson "it's 110" Arizona
Posts: 1,017
Total Cats: 0
Default

Quote:
Originally Posted by firedog25 View Post
but kind of like stock with pubes.
That sounds..great ...

Quote:
Originally Posted by firedog25 View Post
My digital camera only does video, no audio, how lame is that? I'll see what I can get done soon enough.
Yeah an exhaust vid with no audio would suck. Thanks for the pics though, post as many as you'd like please. Keep em coming bro...

Last edited by UofACATS; 09-28-2006 at 12:18 AM. Reason: .
UofACATS is offline   Reply With Quote
Old 09-28-2006, 11:31 PM   #11
Elite Member
iTrader: (3)
 
Join Date: May 2006
Location: Houston, TX
Posts: 2,900
Total Cats: 0
Default

http://www.youtube.com/watch?v=axVBGNTo1Ww

Mine is an N/A 1.8L with the same magnaflow muffler but the addition of a flowmaster hushpower 2 muffler as resonator. I know what you mean about the obnoxiously loud thing... the flowmaster really helped that out a lot. If it starts to bother you ya might consider adding a similar resonator.
Arkmage is offline   Reply With Quote
Old 09-28-2006, 11:41 PM   #12
Elite Member
iTrader: (14)
 
Join Date: Mar 2006
Location: Edmonton, AB
Posts: 4,921
Total Cats: 0
Default

Shouldn't your EGT be pre-turbo?

Have you run the car with the insulating material zip-tied to the heat shield? I'd be surprised if it didn't melt, mine get's hot enough to fry and egg from just normal driving.
jayc72 is offline   Reply With Quote
Old 09-29-2006, 12:41 AM   #13
Senior Member
iTrader: (1)
 
Join Date: Mar 2006
Location: Tucson "it's 110" Arizona
Posts: 1,017
Total Cats: 0
Default

Quote:
Originally Posted by jayc72 View Post
Shouldn't your EGT be pre-turbo?

I think you're right. The turbo is obviously a large heat sink.

It looks like the manifold is tapped for an EGT probe too???
UofACATS is offline   Reply With Quote
Old 09-29-2006, 01:10 AM   #14
Senior Member
Thread Starter
 
Join Date: May 2006
Posts: 884
Total Cats: 0
Default

The zip ties are actually stainless steel from Thermotec, like 18 to a pack or so and I had only used two up until that point. I have the first two holding the 3500*F aerospace quality thermowrap on to the downpipe. Supposedly the manifold only eats up about 100*F, so my EGT readings of 950 should not (supposedly) be that far from the mark. The sound level is very easy to live with now since I routed it out the back like it's supposed to be.
firedog25 is offline   Reply With Quote
Old 09-29-2006, 01:35 AM   #15
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,323
Total Cats: 1,920
Default

Quote:
Originally Posted by jayc72 View Post
Shouldn't your EGT be pre-turbo?
In Firedog's defense, I'll chime in and say that my EGT probe is also post turbo, in nearly the same spot as his. (Mine's turned between the DP and the head, but same proximity to the turbo).

Yes, the turbo itself is a huge heat sink, so technically, we are reading low. But with EGT measurements, we're not so much interested in exact readings so much as relative ones.

The reason I stuck mine where I did is that I've heard horror stories about the tip of the probe weakening and ultimately breaking off, and then subsequently passing through the turbine. How likely is that to happen? Probably not very. But I decided not to chance it.
Joe Perez is offline   Reply With Quote
Old 09-29-2006, 12:20 PM   #16
Senior Member
Thread Starter
 
Join Date: May 2006
Posts: 884
Total Cats: 0
Default

That is exactly why I put mine where it is. I'm still kind of pissed at Subaru for putting a cat pre-turbo.
firedog25 is offline   Reply With Quote
Old 09-29-2006, 04:57 PM   #17
Senior Member
iTrader: (1)
 
Join Date: Mar 2006
Location: Tucson "it's 110" Arizona
Posts: 1,017
Total Cats: 0
Default

Quote:
Originally Posted by Joe Perez View Post
the tip of the probe weakening and ultimately breaking off, and then subsequently passing through the turbine.
Good points. And that would sucketh.
UofACATS is offline   Reply With Quote
Old 09-29-2006, 05:00 PM   #18
Senior Member
iTrader: (1)
 
Join Date: Mar 2006
Location: Tucson "it's 110" Arizona
Posts: 1,017
Total Cats: 0
Default

Quote:
Originally Posted by firedog25 View Post
That is exactly why I put mine where it is. I'm still kind of pissed at Subaru for putting a cat pre-turbo.
Up pipe. Still have two (?) cats left. The cat light-off crap is such garbage.
UofACATS is offline   Reply With Quote
Old 09-29-2006, 06:24 PM   #19
Senior Member
Thread Starter
 
Join Date: May 2006
Posts: 884
Total Cats: 0
Default

Yep, I'm not sure about the current models which use a 2.5 liter, but the 2.0 liter WRX's have three cats, one pre-turbo and two post.
firedog25 is offline   Reply With Quote
Old 09-30-2006, 12:04 AM   #20
Senior Member
Thread Starter
 
Join Date: May 2006
Posts: 884
Total Cats: 0
Default

Update!

http://flamevault.com/~firedog25/mia...t/MVI_1766.AVI

http://flamevault.com/~firedog25/mia...t/MVI_1767.AVI

Now instead of all the business coming from the front of the car, noises come out equally front and rear. Before this exhaust, all the noise came from under the hood. Especially since I lost two fasteners on the downpipe to the midpipe. It was downright flatulent at wide open throttle and all you heard was the turbo spooling (not bad), the exhaust leak (farty), and the chatter when I shifted (not bad). Hopefully this is a decent enough recording for you all!
firedog25 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Buzzing from driver side of engine bay? (MS3 install) nick470 MEGAsquirt 7 06-16-2017 02:53 PM
Toxikk Girz0r Gaming 23 01-18-2017 01:02 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
3rd Time's a Charm...hopefully. zephyrusaurai Meet and Greet 2 09-28-2015 11:59 PM
1997 Miata Misty_Miata pineda92 Meet and Greet 4 09-20-2015 10:22 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 08:25 AM.