Wrapping up our SEMA 2018 interviews I sit down with Gray Fredrick of Advanced Fuel Dynamics.  AFD are responsible for some of the most innovative Flex fuel sensos and tuning solutions on the market.  Based out of Temple Texas AFD is nestled square in the middle of the Texas tuner community and works tirelessly helping race teams and aftermarket manufacturers cope with the widely varying quality of E85 fuels and conventional gasoline.