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Differences between 90 and 91 cars

Posted by Mitsu-MattGSX, Nov 4, 2017

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  1. Mitsu-MattGSX

    Mitsu-MattGSX Probationary Member

    Joined Oct 30, 2017
    Pittsburgh, Pennsylvania
    I was wondering if anyone could tell me the exact differences between 90 and 91 cars. My friend keeps telling me to get a 91 because they're apparently better than 90 cars. Another friend of mine says he doesn't touch 90 cars because of "all the little differences" I drive a 90 GSX for clarity
  2. motomattx

    motomattx Proven Member

    Joined Dec 9, 2010
    wampum, Pennsylvania
    Transmission, oil cooler setup, spline counts on certain shafts, wire harness on the cas vs a plug on the newer 4g63, completely different throttle body and isc and tps sensor, different ecu pinout. Thats about it, neither are "better" just different.
    Last edited by a moderator: Jan 11, 2021

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    2gmitsueclipse DSM Wiseman

    Joined Jul 13, 2005
    Auburn Hills, Michigan

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  4. Mitsu-MattGSX

    Mitsu-MattGSX Probationary Member

    Joined Oct 30, 2017
    Pittsburgh, Pennsylvania

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