Allowable exhaust gases

[tjts1]

Model Year:1985 Make:BMW Model:3-SERIES

ASM 5015 Standards***
Hydrocarbon (ppm) Carbon Monoxide (%) Nitric Oxide(ppm)
Fail 138 0.85 1148
Gross Polluter 313 2.35 2170

ASM 2525 Standards***
Hydrocarbon(ppm) Carbon Monoxide(%) Nitric Oxide(ppm)
Fail 79 0.65 978
Gross Polluter 263 2.15 1970

Model Year:2007 Make:BMW Model:3-SERIES

ASM 5015 Standards***
Hydrocarbon(ppm) Carbon Monoxide(%) Nitric Oxide(ppm)
Fail 52 0.49 424
Gross Polluter 270 1.99 1912

ASM 2525 Standards***
Hydrocarbon(ppm) Carbon Monoxide(%) Nitric Oxide(ppm)
Fail 36 0.46 711
Gross Polluter 220 1.96 1712

ACCELERATION SIMULATION MODE (ASM) TEST EMISSION STANDARDS AND GROSS POLLUTER STANDARDS

[gone-ot]

...maybe this Delphi document will help:

http://delphi.com/pdf/emissions/Delp...-2010-2011.pdf

[tjts1]

Emissions testing done by manufacturers for certification is completely different from smog check type testing of cars already on the road. Try not to confuse the two.

[Diesel_Dave]

Originally Posted by tjts1

Emissions testing done by manufacturers for certification is completely different from smog check type testing of cars already on the road. Try not to confuse the two.

Correct, that's very important to remember. Both the testing methods and the limits are very different.