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  1. Ponyboy

    Powertrain FS: ScienceofSpeed SuperTune ECU

    SOLD Up for sale is a NSX ECU that features the ScienceofSpeed SuperTune ECU chip. Out of the chipped ECUs I've used in my NSX, this version had the best hp and drivability combination. Always produced smooth power, reliable AF ratios, and never gave me any problems. Came off of my '91 5...