Plazmaman introduces the ultimate EVO Mitsubishi Inlet manifold . Read on and the following text will explain why ........... All required design aspects have gone into the design of this product . Whether it be a street based , everyday driven vehicle , club car , rally or full open throttle drag car - this manifold delivers .............. The basic EVO inlet manifold from factory is well designed , it has long runners for bottom end torque , but lacks in plenum volume and has sharp port entry angles . Plazmaman engineers have spent 18 months in designing and testing similar models in all forms of domestic and international Motorsport .................. The base runners are made in Australia from a PREMIUM grade alloy casting for superior strenght and smooth internal finish ................... We increase power and torque delivery by firstly lengthening the inlet runner by some 30 mm and then adding a 5 - 10 % larger port , with a smooth tappered style inlet ram tube . There is a small gradual tapper , from start to finish of the inlet runner . Careful attention was paid to tapper and runner length , so as to give the perfect balance of throttle response , mid range torque and big top end power delivery above 9000+ rpms ........... Careful attention was paid to manifold dome design and shape . To make Horsepower , smooth free flowing entry angles and plenum designs are required ........................... Plenum volume has been increased by some 300+ % - to 4.6 litres - this allows the 4G63 powerplant to handle bigger boost levels and rev freely to 9000+ rpm cycles . Another major advantage of this design is the fact that the plenum volume can be varied to suit different applications - the dome can be lowered or raised during construction to suit individual applications .......................... This manifold was designed to utilise the OEM fuel rail , idle motor , alternator bracket , fuel lines , injectors and throttle cable . All bolt on , incl the full use of the OEM dip stick and location .................. The plenum has to utilise either a 66mm ( street recommendation ) or 72 mm ( race / big boost ) BILLET PLAZMAMAN PRO SERIES throttle body . These are direct bolt on applications , and also utilise the OEM cable and TPS switch ( aftermarket TPS can be adapted if required ) .............................. Plazmaman also has available an adaptor piping kit to suit the OEM piping setup , also available is a full EVO SPEC R piping kit to unleash full power ............................... FOR THOSE WHO ALREADY HAVE OUR SPEC S or R PIPING KITS , A NEW PIPE IS AVAILABLE TO PLUMB UP OUR NEW PLENUM . An after market FUEL RAIL will also be available SOON , incl many new products for the EVO series of vehicles