I see you have an 88 Mustang - most all (except for cali Stangs in that year) were SPEED DENSITY - not MAF cars (Mass Air Flow).
Did you convert your Stang to mass air? If so, then the answer to your question is 'Yes' the Vortech will work well with the mass-air. If you are still speed density, then most likely you will have idle and driveability issues.
E
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1991 5.0 LX Coupe - 38,000 miles
13.17 @ 106.14 mph w/ 2.138 60'
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