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Old 04-24-2008, 02:14 PM   #15 (permalink)
cfg83
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1999 Saturn SW2 - '99 Saturn SW2 Wagon
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jpgmtech -

Quote:
Originally Posted by jpgmtech View Post
Thanks!

BTW, in my opinion (haven't done the research to gather the data to back this up) the major contributor to smog (NOx, particulates) is the diesel engine. They have started to clean up in trucks since mid-2004, but think of all of the pre-2004 diesels out there! They were not even required to have a PCV, no TWC (three-way cat), no EGR, just raw particulates, NOx and HC's being thrown out the tailpipe! And usually in huge quantities as they are mostly large engines...

However diesels are getting much better with 2007.5 requirements, and we can look forward to more improvements 2010.

Suffice to say that a modern OBDII gasoline engine is far far cleaner than the worst emissions offenders.
My hope is to be able to piggy-back on this technology and get my hands on an affordable NOx sensor that is intended for diesels. In the event that I do an engine mod that effects the 02 sensor, I can monitor my normal gasser for NOx compliance.

CarloSW2
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