Emissions for stock m20b25

[diegom6]

Hey guys,

was wondering what are the average acceptable values for a stock m20b25 with CAT and if possible a NON CAT version as well (if it's different) for pass emissions.

CO & HC values?

Thanks
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[movementality]

doesnt it entirely depend on where you live because some places dont even have emissions test

[diegom6]

I guess so, but the web doesn't say crapp about it, nor the call center or customer's service.

So, looking for emission test on stock 325i from factory, i could get a rough idea where is mine at.

[structured]

I can give you my numbers from before and after changing spark plugs and air filter later today. It was a huge difference.

[diegom6]

Go! Mine has a 288 cam, and turbo stroked on MS II.