As I understand it, the PAIR valve introduces fresh air into the exhaust for emissions purposes. The air goes in before the O2 sensor hence the popular PAIR valve mod.
If an O2 eliminator is installed (e.g. with a PC3), wouldn't that make the PAIR valve mod obsolete?
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kst
As I understand it, the PAIR valve introduces fresh air into the exhaust for emissions purposes. The air goes in before the O2 sensor hence the popular PAIR valve mod.
If an O2 eliminator is installed (e.g. with a PC3), wouldn't that make the PAIR valve mod obsolete?
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