ECU flash and state inspections

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2008-2013 Cadillac CTS Performance Mods Discussion, ECU flash and state inspections in Cadillac CTS Second Generation Forum - 2008-2013; Has anyone had a problem with passing their annual state inspection alter flashing their ECU from any manufacturer? First, want ...
  1. #1
    Shovelheadmike is offline Cadillac Owners Member
    Automobile(s): 2011 CTS Coupe AWD 3.6
    Join Date
    May 2014

    ECU flash and state inspections

    Has anyone had a problem with passing their annual state inspection alter flashing their ECU from any manufacturer? First, want to add a compete new exhaust--long tube headers to tailpipe, now. Flash it there. Then, Feb 2015, install the complete Vortec SC package.

    Here in NC, I believe they hookup an OBD II reader to your car and read all of your stored codes. If they can't connect with a standard OBD II reader, you flunk.

    It is pretty funny to see the followers of each of the ECU flash options all accuse the other of corrupting the ECU base file, so you have to re-flash the stock Caddy ECU at the dealer before, it can be flashed again by a competitor's flash. Seems that is true with them all. (If this is not correct, please post who is really compatible. I'm guessing the answer is none, but would really like the answer to be one or more vendors on this site).

    I'm particularly worried about any company that offers custom ECU flash, but it is all done by one person, and that person alone. Hmm... He gets hit by a bus, and I'm screwed if I ever want to make a change? I don't think so.

    What I really fail to understand is why there are not any self tuning systems. After fighting with the Power Commander III for way too long, installed the Zippers Thunder Max on my 2003 Road King. Downloaded for the Road King maps that closest matched my bike and all current mods. Then, all I had to do was ride it. It tuned itself and did an amazing job. A car ECU with a flash can'f do this? Really? Why? I bought a 2011 CTS AWD instead of a 2013 CTS only because it was supposed to be the most tunable of them all. Boy, does that appear to have been a mistake.

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  3. #2
    KLX's Avatar
    KLX is offline Cadillac Owners Fanatic
    Automobile(s): 2012 CTS-V Coupe
    Join Date
    May 2013

    Re: ECU flash and state inspections

    KPE stated to me that you can keep the module with the stock flash in the glovebox and flash back to stock for visits to the dealer and inspection I assume and when they are done flash it back to the modded tune...

  4. #3
    CTSCHICK Guest

    Re: ECU flash and state inspections

    Unless you are trying to sneak by powertrain warranty you do not need to flash the pcm back to stock to go through or pass motor vehicle inspection.
    When they plug into your data link connector they are only checking for troubles codes, emission's related trouble codes.
    HP Tuner software supports the 2011 3.6 but it is not for tuning novices.
    With the Hp tuners you can delete/ set to not report or whatever the setting is for rear O2 sensors and ect so that the pcm does not show any DTC's for missing Cat's, Rear O2 sensors that would report the faulty Cat's ect,ect..
    But you need Tuner experienced in tuning late model GM's.

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