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Fox-Body Cobras
'91 computer in '93 Cobra
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<blockquote data-quote="93Cobra#2771" data-source="post: 1075395" data-attributes="member: 4599"><p>By doing that without changing to a properly calibrated mass air meter, you should have caused a rich condition, barring any vacuum leaks. </p><p></p><p></p><p>The "shift hesitation" isn't due to a built in shift retard or anything like that. It is something completely different and has to do with the time delay the computer has shifting between Closed Loop (part throttle) and Open Loop (WOT). If you powershift the car (keep the throttle floored between shifts), it will bypass the hesitation after the shift. The overall throttle response is also a different function that acts basically like a "accererator pump shot" in carbauraters. The Cobra shoots too much fuel in, so I dropped my setting back to the stock A9L setting.</p><p></p><p></p><p>I'm not surprised, as it would have been running lean since it was basically double calibrated - EEC thought 24#, and the MAF was calibrated for 24#, so it was running lean.</p><p></p><p>biminiLX - PM sent</p></blockquote><p></p>
[QUOTE="93Cobra#2771, post: 1075395, member: 4599"] By doing that without changing to a properly calibrated mass air meter, you should have caused a rich condition, barring any vacuum leaks. The "shift hesitation" isn't due to a built in shift retard or anything like that. It is something completely different and has to do with the time delay the computer has shifting between Closed Loop (part throttle) and Open Loop (WOT). If you powershift the car (keep the throttle floored between shifts), it will bypass the hesitation after the shift. The overall throttle response is also a different function that acts basically like a "accererator pump shot" in carbauraters. The Cobra shoots too much fuel in, so I dropped my setting back to the stock A9L setting. I'm not surprised, as it would have been running lean since it was basically double calibrated - EEC thought 24#, and the MAF was calibrated for 24#, so it was running lean. biminiLX - PM sent [/QUOTE]
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'91 computer in '93 Cobra
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