+1 with oledoc2u.
mine with the c3 oem modded intakes and dr's netted 12.7 @ 110 mph with no tune
were the tune really comes in is the midrange power. mine was fast before but now with a dyno tune the powerband is strong across the board. car now breaks traction at a 30 mph roll! off the line it fries the street tires. hope to track it in the spring, looking for 12.5 to 12.3 if im up to the task. i know the car is!