unless you are a chemists you dont know what you bought

we in my shop have a NHRA divisional super gas car its an alky injected motor and uses twice the amount of alky to gas, we can switch back and forth , do runs not on the same day but it happens -- weather makes us switch -

did you use a hydrometer to check the specific of the fuel before and after the switch ????????????

what were the EGT readings < sorry its a street car performance difference should have been felt as the motors torque goes up 10 / 15 percent, at the track alky is 3 tenths of a second faster in the cars ET -

my guess the octain was to high and the compression was to low and it was wasted out the tail pipe - jz