Originally Posted by PGreenSVT
It's kind of like having a new strategy flashed at the dealer except this is only the FICM (Fuel Injector Control Module). Or you can think of it like an SCT tune for your FICM. It allows the tuner to do stuff with the injection system that can't be done from the PCM, although once done there are some tweaks that can be done at the PCM to take advatage of the new code on the FICM. Does that make any sense? It's just a custom tune for your FICM.
Kind of. I get all that, can you explain in more detail, or more specifically. I understand how this all works, just looking for what it does exactly? Does it change how much fuel is delivered and at what times? How does it differ from the PCM tuning, what can be changed on one and not the other? Thanks!