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Super Moderator
'17 C 4
637 Posts
Just because the ad says it is "CARB compliant" and has "California" in the name,
I strongly suggest that anyone considering this should get the make and model number and contact the California EPA directly to be sure it is actually approved for use.

Then......unless your present CAT is plugged or damaged, it is highly UNlikely that changing it out will result in any significant change to how the vehicle runs.
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