EJ25 STI STAGE 1 2006-2007

Our Stage one tuning option for the Impreza STI EJ25 2006-2007 is ideal for Subaru owners wanting to improve performance for road cars. We replace the stock down-pipe with a high-flow sports cat to improve flow also adding a non-resonated centre section. We then swap the stock fuel pump for the Walbro 255 to ensure good fuel delivery. Finally, we add a high-flow panel filter to improve engine breathing. Your car is then mapped on the road optimising throttle response for peak power and mid-range. The result is a greatly improved power band with a boost target being achieved sooner and holding for longer across the RPM range. Your map will retain all the factory functions your used to along with the improved safety functions. Please consider power figures may vary based on engine condition and millage. We spend an average of 3-4 hours mapping each car.

• Panel filter
• Sports cat "Decat option available for track use only"
• Walbro 255 Fuel pump
• Non resonated centre pipe
• SBR live mapping
• Power figures 340-350 BHP