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      02-09-2013, 02:52 PM   #1
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Drives: 2006 M Roadster
Join Date: Mar 2011
Location: CA

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SMOG results for Euro Headers and Cats

I've had a few people ask me about this, so I figured I'd post.

I got my first smog after getting my euro headers and cats. I care for environmental reasons, but for many they just want to know if they'll pass.

The good news? Absolutely nothing to worry about. It's not even remotely close. All I did was take a 10 minute drive beforehand to make sure everything was warm.

So you can have you performance and feel good about being green as every number except one was significantly better than the average.

Max is maxed allowed, Average is "Average for Passing Vehicles", Measured was my actual measurement.

Results:
HC (PPM)
15 mph Max: 54 / Average: 4 / Measured: 8
25 mph Max: 37 / Average: 4 / Measured: 1

CO (%)
15 mph Max: 0.50 / Average: 0.01 / Measured: 0.00
25 mph Max: 0.47 / Average: 0.01 / Measured: 0.00

NO (PPM)
15 mph Max: 430 / Average: 16 / Measured: 5
25 mph Max: 717 / Average: 15 / Measured: 5
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