So, yesterday morning I was forced to downgrade to a tankfull of 93 octane from the heroin buzz of 110 gas:( Surprisingly, the car still runs incredible:) Had the racegas cleaned things out possibly or is my butt o meter out of whack. Maybe a bottle of Techron every now and then would do the same thing? Bill m - 95 1/2 Salt"ino"encrusted Avant