by Myfeckin FTO » Thu Nov 04, 2010 2:44 pm
Its been well documented on here that the key to a quick NA FTO is to loose weight.
Its not particularly hard to loose 100kgs from an FTO bringing down the weight of a GPX to circa 1100kgs.
As per above better off spending your money on good brakes and suspension than chasing NA power.
If you were to chase NA power then a, CAI intake, a free flowing decat exhaust inc manifold and downpipe along with an upgraded fuel pump, bigger injectors, a fuel pressure regulator and a good aftermarket ECU like a Haltech,Motec etc would be as far as I'd go although these mods would make a good base for the addition of a supercharger.