Quote:
Originally Posted by jordanrw260
That is correct, the only thing I noticed that the shop did was put the primary o2 in the secondary o2 spot on the borla and then plugged the original primary o2 spot. Now the secondary is behind the cat on the front pipe.
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I would definitely put them in the correct spot. The primary o2 is what tells the engine how its running, and the secondary checks to make sure the cat is doing what its supposed to be doing. having them swapped is not a good idea