A smog pump is also called an air pump, what it does is pump air into the cat converters to break up the hydrocarbons, when you take your smog pump off, the hydrocarbons are more concentrated then they should be and due to the higher flow of hydrocarbons, your cats will get clogged over time. If you want to keep your car street legal, driving your car for a month or so with out one wont hurt, but if you dont care about being street legal, yank it off, and get an off road h-pipe...
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'93 Gt, Stock as a rock, but plan an AOD to T-5 swap, steeda tri-ax shifter, 3.55's, cobra intake, gt-40 irons, e303 cam, 1.6 rr's, mac headers, off road h-pipe, flowmasters cat back, msd ignition, blaster coil, mac cold air box (fenderwell), eibach springs, silver cobra r's, and an obnoxiously large mustang in the back window =0)
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