Theres a member with a code 3 pulley dual 3inch intake with cat delete and they only run 12.6@110 on et streets,my problem right now is traction my mph is good comparing with other crossfires on dragtimes.One other crossfire with a inmotion tune with a intake ran a 12.8 @ 109 even on a drag radial,so I think I 'm doing decent for a roadster on a street tire with just a basic tune and a intake.