The SBR S2 upgrade is ideal for the fast road and track day enthusiast. Improved throttle response, extended power band, peak boost at 1.5-1.6 bar resulting in 380-400BHP peak power. Your car is mapped live on the road to ensure best real world results. Map time is approximately 3-4 hours. Power figures can vary depending on millage and engine condition.
For the 2008-2019 EJ257 STI onwards Impreza we upgrade the head gaskets to Cosworth and ARP head studs. The OE head gaskets area common failure on the 2.5 engine only. This requires removal and of engine and cylinder heads. We skim and service the heads adding Cosworth stopper gaskets and ARP head studs to ensure no future failures.