U4 race gas`

[jlrenken]

doe or has anyone ran U4 gas or know anything about it. is it a good fuel to use for the money.
thanks

[m0t0xk1d]

On of my friends used it in his fully built 300ex and he gained 2 horsepower over c12 on a dyno. how ever its really finicky with jetting, however, that shouldnt be a problem with efi