[Trochoidal]

Did you make all of the “required changes” in your tune file as indicated below?

Enable E85

EFI Tuning LLC

Tuning Tool: HP Tuners v3.2.x
Platform: 2016 Camaro SS

File: 2016_ss_flex_fuel_baseline.hpt

Changes:

*** required ***
- modified Engine -> Fuel -> General -> Air Fuel Ratio -> Stoich AFR-> Flex Fuel AFRs

- modified Engine -> Fuel -> Open & Closed Loop -> Flex Fuel -> Flex Fuel -> Enabled

- modified Engine -> Fuel -> Open & Closed Loop -> Flex Fuel -> Flex Fuel -> Fuel Sensor -> Sensor

- modified Engine Diag -> DTC's -> P0178 -> Flexible Fuel Sensor Circuit Low -> checked, Error Mode -> MIL on Second Error

- modified Engine Diag -> DTC's -> P0179 -> Flexible Fuel Sensor Circuit Low -> checked, Error Mode -> MIL on Second Error

- modified Fuel Sys -> Diagnostics -> Flex Fuel -> Sensor Diag -> Enable
****************


*** optional ***
- modified Engine -> Spark -> Advance -> Spark Correction -> AFR Correction -> Alcohol -> Gas table

- modified Engine -> Spark -> Advance -> Spark Correction -> IAT Spark -> Mult4 -> [1.00 1.00 0.80 0.50 0.20]

- modified Engine -> Spark -> Advance -> General -> Cranking/Start -> Cranking -> enhanced for Flex Fuel

- modified Engine -> Spark -> Advance -> General -> Cranking/Start -> Alcohol Adder -> timing added for Flex Fuel cold starts
****************


Also update this table to what is indicated in post #3 of this thread:

https://www.camaro6.com/forums/showthread.php?t=538796