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  1. #1

    Default 1991 Sunsport EFI upgrade PCM 351W???

    Hello,

    We have mostly restored a 1991 Sunsport and happened across a very good deal on a rebuilt 351W. Our plan WAS to replace the carb with a Holley Scorpion EFI.

    The Local Supra shop says there is no good way to add an O2 sensor to the old exhaust system without having major issues.

    Has anyone added an EFI like the Holley Scorpion or FITech systems?

    Where did you put the O2 sensor?

    Are the O2 sensors burning out?

    Thanks!!

    Sent from my SM-G975U using Tapatalk

  2. #2
    Join Date
    Jun 2010
    Location
    Oregon
    Posts
    303

    Default

    There is a spacer for a O2 that goes between the upper and lower exhaust.6-20-14 042.JPG

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