Inspired by 18psi...My Exhaust
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Joined: Dec 2007
Posts: 185
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From: Chattanooga, TN
To match my 3" downpipe, I needed a 3" exhaust...
One 2 bolt 3" universal exhaust flange
4' of 3" 16 guage aluminized steel
1x 45 on a 4" radius
1x 90 on a 4" radius
1x 7" magnaflow round
1x stainless 90 on 4" radius
Put all of these together and what do you get?











One 2 bolt 3" universal exhaust flange
4' of 3" 16 guage aluminized steel
1x 45 on a 4" radius
1x 90 on a 4" radius
1x 7" magnaflow round
1x stainless 90 on 4" radius
Put all of these together and what do you get?











Thread Starter
Junior Member
iTrader: (4)
Joined: Dec 2007
Posts: 185
Total Cats: -1
From: Chattanooga, TN
Yeah, I'll be sure and check my coolant lines...Fingers crossed. Turned out pretty well for my first exhaust I think. I wanted the tip pointed down a little, It does look a little odd right now, but I think when it's on the ground it will look just right. Should flow great... I'll get vids when I start the car, should be in the next day or two. First time starting it with the turbo, still gotta reflash the MS and install the IAT.
Thread Starter
Junior Member
iTrader: (4)
Joined: Dec 2007
Posts: 185
Total Cats: -1
From: Chattanooga, TN
Well, this may be my first exhaust, but I have worked in a fab shop...
It's not too loud for my taste. I'm waiting on a heater hose and some heat sheathing, but when I get those in I'll take some vids and post them. Should be next week some time. Then off to the dyno! (fingers crossed)
It's not too loud for my taste. I'm waiting on a heater hose and some heat sheathing, but when I get those in I'll take some vids and post them. Should be next week some time. Then off to the dyno! (fingers crossed)
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StratoBlue1109
Miata parts for sale/trade
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Sep 30, 2018 01:09 PM








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