I recently bought a mirage with a 4G63T. It comes with a boost controller which has PS as the brand. The car also comes with a thingy that I've no idea what it does. It has one knob which you can adjust to 0 or |PLS|1, or |PLS|2 ...|PLS|7,Written on the thing is, OPTI-Flow stabilizier also from the same PS company. It is made in the UK. Anybody heard of these things ?