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Boost aim off flex fuel levels
Posted:
Mon Sep 13, 2021 3:28 pmby DaveTS
Hi there,
I'm using an M142 with package: GM LLT 3.6 Hi Lo & firmware: GPR-DI(M142).
I want to adjust the aim boost levels based off the flexfuel sensor %ethanol. How do I achieve this?
Thanks for your time.
Cheers,
Dave
Re: Boost aim off flex fuel levels
Posted:
Mon Sep 13, 2021 4:05 pmby NathanB
Hi Dave,
You need to have the alternate fuel mode set to flex fuel, and have a boost output resource assigned to add all the boost control systems.
You are then looking for the 'fuel composition boost limit (%)" table.
This applies a scaling between the boost activate and boost aim main.
As this table has a maximum value of 100%, you set you boost aim table to suit your higher boost fuel (high ethanol content) and use the table to scale down for your lower octane fuel settings.
Re: Boost aim off flex fuel levels
Posted:
Mon Sep 13, 2021 5:21 pmby DaveTS
Hi Nathan,
Excellent, thanks for this information, all sorted.
Cheers,
Dave
Re: Boost aim off flex fuel levels
Posted:
Mon Sep 13, 2021 6:09 pmby Stephen Dean
More information on the Flex Fuel system operation in the M1
here