im not too impressed with them, but it is my daily driver, and i didnt have the nitrous all the way done. 16.8@78 i was chirping the tires a lil on the launch, (track was realy realy cold) but not enough to change my times that much. i was runnin 16.9 with that stupid iat sensor plug in thingy, so i took it out and ran better. i dont know whaqt these 3.4's run normaly but probably not this slow.