94-95 Mustangs Tuning Fuel
From Mustang-Tech
Overview
Fuel tables: The values in the 2 load based tables are your target A/F ratio. Please note there are several modifiers to these tables, I will post a list on how they interact in the future.
fuel_table_base_OL - This is the base fuel map used until the ECT stabilizes, the temperature in which the EEC stabilizes is adjustable through a scalar, stabilized_min_ECT. The lower the value in that scalar the sooner the EEC switches from the base table to the stabilized table.
fuel_table_stabilized_OL - This is the table you will use to dial in your A/F, once your MAF transfer has been set.
fuel_table_startup_OL - The time based values in this table are subtracted from the load based values in the other 2 tables to enrichen the mixture during cold startup. The higher the value in this table the richer the startup mixture is.
E85 (Ethanol)
Wideband O2s and narrowband O2 sensors will work perfectly fine with E85, as they read in terms of LAMBDA and not to stoich gasoline AFR (14.64).
Ethanol requires more volume of fuel than unleaded gasoline does. As a result, your injector slopes should be reduced by roughly the ratio of 9.76/14.64. In practice, 28% or so works well.
