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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 06-19-2007, 09:29 PM   #1
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Default My New Downpipe

I've wanted to make a divorced downpipe ever since I saw Corky's new downpipe design. This past week I finally had some miata time and put one together. The main reason for upgrading my downpipe is because I was experiencing boost spiking at 12psi with my gt25r. I tried adjusting it through my EBC, but never could solve the problem. So, I thought it might be my downpipe design. I've since installed my gt28rs and have been running my old downpipe with no boost spiking...but I'll save that for another thread

During installation, I ran into a snag. I was unable to get a good seal at the downpipe flange. I had the flange sanded down, but still was getting exhaust leakage. I broke down and bought a gasket off of ebay the other day. I did not want to disassemble the flange and have it milled flat. Hopefully I'll be able to test this thing out Saturday.

Last edited by Stripes; 08-19-2007 at 11:12 AM.
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Old 06-19-2007, 09:38 PM   #2
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lookin good....keep us updated!
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Old 06-19-2007, 10:29 PM   #3
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hell yeah stripes IC+DP kit.
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Old 06-19-2007, 10:34 PM   #4
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I've tossed around the idea of making a downpipe for hks manifold. I just don't feel like taking apart my car anytime soon.

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hell yeah stripes IC+DP kit.
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Old 06-19-2007, 10:45 PM   #5
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willing to sell your old one?
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Old 06-19-2007, 11:38 PM   #6
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Nice - better transition to the bend from the flange too.
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Old 06-20-2007, 09:04 AM   #7
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Looks good!
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Old 06-20-2007, 09:16 AM   #8
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Nice work!
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