Forget about trying to blame JBA. It should be common knowledge that you shouldn't use O2 sensor extensions regardless of the brand. If you are going to mod the car, especially something as involved as headers, you should be 100% confident you did your homework and know the risks.
Every brand includes the O2 extensions, JBA hasn't done anything wrong by you.
Point taken, just very frustrating when you follow manufactures instructions and bad things happen because of it
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