| Im at stage 5, running 17psi with our 98octane premium pump gas. Porches ive come up against: 1997 911 carrera non turbo- I was easily faster down the straight, few seconds a lap quicker. 2001 911 Turbo - almost dead equal- similar lap times. 2003 GT2- similar straight line speed, porche was better under braking and cornering - 2 seconds a lap quicker than me.
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