RADustin
May 22nd, 2017, 04:42 AM
Working on a non-ls platform that has a 24x and 1x sensors added along with 4L60e and DBW. PCM is 0411. Keeping coil on plug.
The engine/cam is the older genI firing order, 18436572.
What is the best way to change the firing order in the PCM/harness to match this?
Are harness mods needed? Or can it be done all in programming?
I found this link on assignments-
http://www.lsenginediy.com/gm-gen-iii-ls-pcmecm-change-firing-order/
but it is confusing as it more pertains to making the fuel trims work. I want these work, but I also want to make sure the ignition and fuel injectors are correct.
Do I swap wires at PCM OR plugs with 4,3 and 7,2 respectively at both the coils and the injectors? Then change(program) the injector assignment table to adjust the banks, as the 5.7L van tune would have? or is there a way to do the swap completely in programing?
Appreciate any help.
The engine/cam is the older genI firing order, 18436572.
What is the best way to change the firing order in the PCM/harness to match this?
Are harness mods needed? Or can it be done all in programming?
I found this link on assignments-
http://www.lsenginediy.com/gm-gen-iii-ls-pcmecm-change-firing-order/
but it is confusing as it more pertains to making the fuel trims work. I want these work, but I also want to make sure the ignition and fuel injectors are correct.
Do I swap wires at PCM OR plugs with 4,3 and 7,2 respectively at both the coils and the injectors? Then change(program) the injector assignment table to adjust the banks, as the 5.7L van tune would have? or is there a way to do the swap completely in programing?
Appreciate any help.