Tuning a 2022 ZL1 and everything is OK with a few weird differences in logic with Flex Fuel. BUT, the new surprise is that the bypass valve is no longer electronically controlled. It is literally only a vacuum line on either side of the valve. So changing the tune does nothing to allow more boost. The car has an 18% overdrive and its getting up to about 14.5 psi and then flutters and I think the bypass is actually opening and bleeding boost. Anyone have any experience with the 2022 blower changes?
Right now were going to test reducing the pulley to 10% overdrive to see if the pressure stabilizes.
New logic in the 2022's with Flex Fuel, it seems that as long as the VIRTUAL logic detects 19% or less percent of ethanol, the ECU still references the gasoline tables regardless of what the Alcohol is displaying from the physical sensor.