I'm using a 302 based engine, so I will use the cam sync thingy from a 5.0 Explorer. They had coil on plug and came with exactly the same type of arrangement as shown above.
Even if the firing order WERE different, what would it matter? Like swapping plug wires, you'd just need to swap coil leads. . . .
For closed LOOP fuel control, the PCM controls banks of cylinders, either it makes richer, or leans it out.
When PCM see's a lean condition on Bank 1, originally cylinder 1,3,5,7, it will add fuel to all those cylinders independent from what BANK 2 needs.
If you rewire you're injectors and now an injector originally on bank 1 is now mixed with some originally on bank 2, when the computer goes to adjust fuel based on oxygen sensor feedback, some cylinders are not going to be adjusted.
I believe the firing order function only is for MISSFIRE diagnostics. I don't believe it actually changes the order the PCM fire injectors/coils. There have been threads about this before.
Unless you can tell the PCM which cylinders are BANK 1 and which are BANK 2, its going to be hard to do CLOSED LOOP when using a LS1 operating system on other engines.
__________________ 1967 Chevy Pickup, 5.3L 4L60E
1989 Chevy Caprice, 5.3L TH400, soon to get a turbocharger
Unless you can tell the PCM which cylinders are BANK 1 and which are BANK 2, its going to be hard to do CLOSED LOOP when using a LS1 operating system on other engines.
EFILive has this covered. Notice the difference between early small block (L31) and gen 3 small block (LS1). Copy/Paste, you're done.
im trying to gather info on swapping a ford ecu on an ls1 for a friend of mine at his machine shop... seems as though this thread gave me some valuable intel that just might point me in the right direction
