Are You Running Lower Compression To Acheive The 20psi Boost ? Im Running St.1 Gcg 450hp Hi Flow Turbo , 600hp Bosche Motorsport Fuel Pump, Malpassi Rising Rate Reg, Ces Racing Split 3inch Dump Pipe, 3 Inch Cat, Exhaust, Link Ecu , Gtr Intercooler And At 17.5psi Boost My Car Could Only Manage 212rwkws On Shootout Mode , My Tuner Advised Me That I Needed An Aftermarket Manifold To Achieve More Boost And Therefore More Power , He Reckons This Will Give Me Another 15 To 20 Rwkws!!! So At 230rwkws Im Going To Be Still Along Way From 265rwkws Lepperfish What A Freak/ Animal Of A Car Youve Got Mate!!