The SBC firing order is 1-8-4-3-6-5-7-2.
The 5.3 liter (LSx) firing order is 1-8-7-2-6-5-4-3.
It's my understanding changing the '0411 bank assignments in the flash, DOES NOT change firing order. The '0411 24x firing order can be changed by re-pinning the Injector and Coil Pack wiring.
dave w
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