More boost would be the only solution to readily pick up an extra 50 horse right away. I thought prochargers ran at 7-9 lbs even 8 gets close to 600rwhp Sent from AutoGuide.com Free App
2011 Race Red GT/CS: current
MGW race spec shifter, Borla ATAK axle backs w/ resonator deletes, Boss Intake Manifold w/ Steeda CAI, stainless power longtube headers, driveshaft shop carbon fiber drive shaft, ACT twin disc clutch.
2014 Race Red V6: sold
Airaid Cold Air Intake, pype bomb axle backs, bama 91p tune, ford racing 3.73 gears, Barton short throw shifter, Mac ceramic shorty headers.