Cobra Computer

While flipping through MM&FF (great magazine)i saw for sale a "cobra mass air kit". Or something along those lines. Basically its a 70mm mass air sensor, 24# injectors, and a cobra computer calibrated to the 70mm mass air sensor. Now i was already planning on 24# injectors and a 70mm mass air, and a 5 speed computer, this caught my attention. But i have heard stories about the cobra computer's air to fuel mixture not being as favorable as the regular computer's. And this makes no sense to me, because if it wasnt as good, why would they make them, and put them in the cobra... So is this true? Thanx in advance for your replies...

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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)