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you will need to be on the internet for this. as always, ensure your MPVI2 has been resynced by pressing re sync on the help dropdown menu. hopefully i can save others some time by posting useful tips Opened service ticket and we went from there. all you have to do is remove the red and blue pin locks off the PCM connectors as originally after installing the engine i had forgot one small ground that was holding back HPtuners to connect.Īfter receiving a third revision of my tune i went to download to the PCM and i got the fateful message "unable to detect vehicle diagnostic protocol" Ensure that these wires are properly powered, and verify that the grounds are all connected as well. 12v for pcm and all the engine electrical as well, and a constant 12v going to PCM constant. Recently, i installed a new wiring setup running off switches that are controlling relays for the sw. (1 pin to blue connector pin 58, 1 pin to constant power, and two wires going to ground) this setup worked for roughly 1.5 years and never really had any issues with it besides when my laptop wouldn't let go of a USB device in that port. i got a universal OBD2 port off amazon and wired it in according to their instructions. My setup is a fully built 5.7 in a 87 rx-7 utilizing the newer 99-02 pcm with HPtuners software. Previous to this incident i was using my MPVI2 to download to the LS PCM with only intermittent issue. the wait time on the service tickets suck but the person (i believe it was Eric) was helpful to clarify questions i had when he did get a chance to reply. i personally find this insane - especially after working with a five member staff company supplying wiring harnesses throughout the world and still taking phone calls for orders or issues. I want to start by clarifying HP tuners does NOT have a contact phone number. These acronyms and more are explained in more detail in our tech help blog posts, found here.I have just finished figuring out an issue with my MPVI2 that i would like to share as it doesn't seem like the MPVI2 has been out long enough to have many successful troubleshooting posts, or at least not that i could find before being forced to open a service ticket. We offer Locked LS ECU Unlocking or Tunerlock Removal Services, allowing the ECU to be tuned freely afterwards. Occasionally, previous flashing can result in a LOCKED ECU or PCM. Please note, these services should be used in conjunction with either our standalone harnesses found here or our plug and play wiring harnesses found here. These are sometimes referred to as an LS MAFLESS Tune, which allows the engine to run without the MAF (Mass Air Flow) Sensor. Whilst we are completing the VATS delete, we can also flash onto the computer a MAFLESS or Speed Density base tune. An LS VATS Removal, turns off this software, allowing the factory computer to be used without the need for a BCM and Key Reader, both of which are commonly removed in most LS Swap Wiring Kits & LS Standalone Harnesses. If the signal from the factory programmed key, isn’t received, the vehicle will not run for more than one second.
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VATS, or Vehicle Anti Theft software, is, as the name suggests, GM’s in house anti-theft software. No LS Conversion is complete without a full VATS Delete or VATS Removal. GM Holden Factory Reflashing Services – using HP Tuners, we can reprogram your Factory ECM PCM or TCM.