I'm using a Turbo XS high performance single stage controller. I plan on putting on a Profec B eventually but time has been an issue lately. I know it's not the exhaust because I pulled it at the down pipe. I know it's not the intake because I pulled it just after the maf. The heads are ported to 288 cfm per cylinder on intake and 242 on exhaust. So that's not it. The rest of the motor is flat top 9:1 Diamond racing pistons, total seal classic rings with Pauter billit rods. The intercooler is rated at 700 cfm so I'm sure that's not it. It's a Spearco 2-171 core. I work part time here at Street Flight basically just writing chips. I get a little hands on work with my car only usually. I don't have AIM but I do use msn messanger.