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just purchased stainless works headers
I have 2010 ss auto. When I bought the vehicle it already had the gm performance axle back system on it but no cai. I purchased some used staimless works headers on ebay with the fa tory connection and off road emission option. First question is do I need o2 ext? And what is good tuner and or tune to use with this set up. And I also plan on getting a cai any suggestions? Thanks
Tony
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