The SBR S1 is our most popular choice for the Impreza STI 2001 Onwards.
Improved throttle response, extended power band, peak boost at 1.4-1.5 bar resulting in 340-350 peak power. We install a 200 CEL sports cat, Walbro fuel pump, Performance panel filter and SBR power map. 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.