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- Anonymous2 decades agoFavorite Answer
yes, it injects cold air in to the exhaust to lower emission pollutants. should it fail or be removed it will not effect the performance one bit. it only lowers emissions...nothing else.
Source(s): 46 years wrenchin' - Anonymous2 decades ago
actually, it does nothing to lower emission.....it only adds air to "appear" to lower emissions
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