Originally Posted by ThePass
What are your thoughts?
Got your email. Thanks for including your order number. For clarity, let's first confirm that you have an MSPNP, a very different creature than the DIYPNP.
That aside, you also indicated in your email that you didn't know what firmware to load, or where to get it. Let's start with this. The firmware would already be on your laptop in the C/ProgramFiles/MegaSquirt folder. Choose 90-93 and then WITH or WITHOUT AFM per your setup. You will need to run the "download MS firmware.bat" file inside the folder that is correct for your application.
Once that completes, *do not* install your previous tune file. Instead, download the basemap needed for your setup off our website and load it in:
Make sure you remove the ST SIG fuse from your car before installing the MSPNP back into your car. And if you've got larger than stock injectors, get that set up before trying to crank. If the car starts, then verify timing.
Corrupt MS1 firmware can shut down one of the injector channels. There are also settings that could shut off one of the injector channels. If you had some sort of software/firmware problem, and then you loaded your previous tune back in after firmware you would have brought the problem back. It is much more likely that you have a software problem than one in hardware.