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You can use the red top ecu on a black top. The only major difference between a red and black is the actual tune in the ecu, and since your replacing it with the PFC it doesn't matter. The biggest advantage to a MAP based unit is the fact you are not limited by a MAF or have to worry about a MAF going bad. I prefer the MAP based unit, but you should also talk to your tuner, they may prefer one over the other which could get you a better end result.
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