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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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 Posted: Sat Aug 16, 2014 6:03 am Post subject: 931 Emissions - No Cat/Cat Alternatives |
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I seem to recall a couple people saying their cars passed without a cat. If you have, what were your HC numbers?
Also, if you have had a aftermarket cat installed, I would appreciate pics.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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jason c
Joined: 13 Jan 2014
Posts: 1018
Location: Nwi
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| Posted: Sat Aug 16, 2014 12:50 pm Post subject: |
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When I went through AZ. Emissions 20 years ago;
HC. CO. NOX
Standard 2.0 60 3.0
1st test. 2.96 121.3 .5
2nd test. .43 7.2 .5
The cat was punched out & the only change between tests was a mixture screw adjustment. The car ran a bit rough at idle and I took it easy on it. It was readjusted after passing. |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Mon Aug 18, 2014 2:36 am Post subject: |
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Ooooh, I just found this horrifying piece:
In other good news, 3 Porsche converters still exist, all are in Germany, and the cost is a mere $1300!
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Wed Aug 20, 2014 5:00 am Post subject: |
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$225 spent, generic (but large diameter) CAT welded in, HC knocked down from 260 to 17.
Whew.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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