Originally Posted by
#1GALANTFAN
I think the 4G69 engine does come with stock headers though, but thanks for answering where the performance gain comes from. Then I do have another question, because I don't wanna delete the main cat so my car can stay legal, is there a cat on the factory headers like around the collector? And if so, does the RRE headers remove that first cat? I don't care if that cat is off, because when they inspect my car, they only look on the pipe for the main cat, so I wouldn't mind if that first cat gets removed by the aftermarket headers, I just wanted to know. Thanks.
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