LS ecu just swap tune
my BIGGEST TIP FOR SWAP GUYS RUNNING A UNIVERSAL OBD2 PORT - on the universal bits, there are red, black, white, purple, and brown wires. if your MPVI2 works long enough only to erase the calibration and not upload it thus causing your car not to run, do not freak out. if the writing process gets past bootloader download, the MPVI2 is definitely communicating with the car is some manner. personally i feel if i had been able to i could have figured out if the pcm was roached quicker or not, as this was my first obstacle i wanted to clear upon troubleshooting. you cannot read the debug file HPtuners requests yourself unfortunately. seeing this misinformation on the internet really screwed me up as i was constantly worried about the wrong issue because even after installing the exe drivers, it said serial converter. THE MPVI2 SHOULD SHOW AS A SERIAL CONVERTER NOT CHANNELS A/B LIKE THE OLDER ONE. anything past this is solely an issue between communication between the car and the MPVI2. It is my understanding that as long as the information about your interface, and the credits available show up, your PC is communicating with the MPVI2. open vcm editor and click help, and then press the blue i button and wait for the messages to show up. use your phone for hotspot or a verizon jetpack if you have one. 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. 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.