Loose the open cone kit first off. F4R engine suffers badly from heat. Just pop the bonnet after a long journey and you'll see! Nothing else is needed for the STG1 map but minor mods will help give better power allthough peak gains will be minimal from the generic map. Standard recirc valve is fine unless yours is fooked.
Define full silicone boost kit? Something like the hard boost pipes kec sell or silicone hoses in the engine bay? Either way you'd better with a uprated intercooler.
Define full silicone boost kit? Something like the hard boost pipes kec sell or silicone hoses in the engine bay? Either way you'd better with a uprated intercooler.