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Thread: 1999 saturn s series

  1. #1
    Potential Tuner
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    Jul 2019
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    1999 saturn s series

    can the 99 saturn be tuned?

  2. #2
    Senior Tuner cobaltssoverbooster's Avatar
    Join Date
    Dec 2008
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    Nevada
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    4,452
    if it has the GM L4Big ecu then you might be able to. The oldest visible tune from saturn is a 2000 L series with L4Big ecu.
    Earlier then that was the chev cavalier which also had the L4Big ecu.
    if you dont have the software i suggest finding someone who can perform a quick ecu connection so a log file can be generated. from the log file you can get ecu model, os, hardware information which can be emailed to hpt tech for support verification.
    2000 Ford Mustang - Top Sportsman