[Goat Blower]

You don't need premium gas in any factory ECU turbo car, you just get less timing and sometimes less boost. The factory probably got their advertised horsepower rating from using premium, but you don't need to for driving it around town. I drive Volvo Wagon Turbos all the time and never use anything but good old 87 octane and they usually haul ass with no problems.

If you hear an EFI'd car pinging, there's more wrong than the octane level of the gas.