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Some say it will some say it won't if you get the o2 sensors with them...I will have to wait to find out as I haven't received my headers yet.
All including forum sponsors say you don't require a tune till you have both a CIA and headers. I for one don't plan on getting a tune till I drive to Dallas and have Andy at ADM install a fast 102 and one of their CIA (I've heard nothing but good things about them..the work and their parts).
Oh and Andy if your catch this I'll be giving you a call for those parts and tune in a month or so lol
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