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Member Thingy
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1,119 Posts
i suppose you could live with everything still intact, except for the stock tuning, lean it out a little bit as far as you are willing to push it and see if it will meet requirements, otherwise, you can conversely remove everything. i have no cats, no egr, no care for the environment with regard to my car, little love for the charcoal filter, and the list goes on. what are you trying to do?
 
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