Hello All. I've been away from the forum a few weeks since I changed jobs recently and was on vacation. I don't know if this has been covered previously but has anyone filled their car with premium gas? I filled my car with premium over the weekend for the first time and WOW! After a few miles of driving, I could believe the response I was getting from the motor and the PS transmission. I don't know why the PS would be any differnt but the two obviously go hand in hand. The engine was definitely more responsive with the tranny shifting quicker due to the power I was getting from the motor and getting it quicker up to speed. Coupled with the R2C CAI I have and fuel, the car is running awesome.