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Old 09-14-2010, 07:18 PM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 19,190
Mein Auto: 02 BMW 525i M54 automatic
Quote:
Originally Posted by Gian View Post
I always use premium fuel.
These are very interesting results. Thank you for posting. I updated the previous comparison (post #3) so that all four of us are accounted for (so far).
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- Canada (bmw_n00b13)
- Northern California (bluebee)
- Southern California (Gian)
- UK (dunk1127)
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Comparing just you (socal) and me (norcal), we find:
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HYDROCARBONS:
- 15mph (2400 rpm): bluebee: 0 ppm (limit = 52 ppm, avg = 4 ppm)
- 15mph (1757 rpm): gian: 1 ppm (limit = 51 ppm, avg = 4 ppm)

- 25mph (2400 rpm): bluebee: 0 ppm (limit = 36 ppm, avg = 4 ppm)
- 25mph (1279 rpm): gian: 1 ppm (limit = 35 ppm, avg = 4 ppm)
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Carbon Monoxide:
- 15mph (2400 rpm): bluebee: 0.00% (limit = 0.49%, avg = 0.01%)
- 15mph (1757 rpm): gian: 0.01% (limit = 0.48%, avg = 0.01%)

- 25mph (2400 rpm): bluebee: 0.00% (limit = 0.46%, avg = 0.01%)
- 25mph (1279 rpm): gian: 0.01% (limit = 0.46%, avg = 0.01%)
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Carbon Dioxide:
- 15mph (2400 rpm): bluebee: 15.0% (limit = unknown)
- 15mph (1757 rpm): gian: 14.9% (limit = unknown)

- 25mph (2400 rpm): bluebee: 15.0% (limit = unknown)
- 25mph (1279 rpm): gian: 14.9% (limit =unknown)
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Nitrogen Oxides:
- 15mph (2400 rpm): bluebee: 21 ppm (limit = 424 ppm, avg = 16 ppm)
- 15mph (1757 rpm): gian: 14 ppm (limit = 419 ppm, avg = 16 ppm)

- 25mph (2400 rpm): bluebee: 25 ppm (limit = 711 ppm, avg = 18 ppm)
- 25mph (1279 rpm): gian: 1 ppm (limit = 706 ppm, avg = 18 ppm)
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Oxygen: (What is this? Is it the oxygen in the exhaust?)
- 15mph (2400 rpm): bluebee: 0.0% (no limit provided)
- 15mph (1757 rpm): gian: 0.0% (no limit provided)

- 25mph (2400 rpm): bluebee: 0.0% (no limit provided)
- 25mph (1279 rpm): gian: 0.0% (no limit provided)
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It's interesting that your limits in southern california are a bit lower than mine in the Silicon Valley; yet the averages are the same (duh) and your numbers, for most part, are about the same except for the nitrogen oxides.

My nitrogen oxides are a LOT larger than yours; but both of us are an order of magnitude below the limit.
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