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no catalitic converter an no muffler thru the exhaust pipe.
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That means that your headers are doing exactly what your old ones were doing.. except now you dont have barely ANY bakcpressure at all.. out cars need the backpressure.. i think 10PSI minimum.. taking away your cat and muffler, and straight through headers. there is no backpresure, watch, put a stock muffler on there, and watch how much more Power you will have.
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