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Thread: E38 ecm, only showing 1 bar speed density option

  1. #1
    Potential Tuner
    Join Date
    May 2019
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    1

    E38 ecm, only showing 1 bar speed density option

    Finally finished everything on my 75 Dart. And we hooked up and its only giving us the option for 1 bar speed density to be applied. However I have two turbos on my gen iv 4.8 and was wduring if there was a way take my e38 ecm a
    Nd reflash it so that it will allow me to use the zr1 mtrap sensor and finish the tune rr started. Any tips or ways around this issue or do I just basically have to break down and another e38 from a a 2010ccamaro?

    Thank you

    Ri hays

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
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    13,533
    Post your file.

    E38 computers as far as I know either offer no upgrade or only a 2 bar upgrade. Never seen a "1 bar" speed density OS on any E38 computer.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
    Advanced Tuner
    Join Date
    May 2006
    Location
    Seattle, WA
    Posts
    538
    You also dont need an enhanced OS to tune for boost on anything Gen IV+. Set the MAP sensor values to your sensor, rescale Spark table axes, and rescale VVE then tune away.
    ~Erik~
    2013 Sonic RS - manual, CGM, 6M, sunroof, mods in process
    2008 TrailBlazer 3SS AWD LS2, loaded, dropped, modded, SE22 Performance tuned. And then some...
    2002 TrailBlazer LT 4WD 4.2L I6, lifted, tires, exhaust, SE22 Performance tuned