Originally Posted by URBiN~HURMiT

The reason I asked was that AAM had problems with the Tune - Ecutek - and Flex Fuel - then they blew the motor.
MA-Motorsports also had a problem with making the tune work - boost spikes and boost creep - so they went with external waste gates and external boost controller.
This effectively eliminated the automatically compensating Flex Fuel tune.
It ended up being a major loss of time and money.