Pushing for higher output with a Stage 1 or Stage 2 tune generates a massive amount of excess heat from the 5-cylinder EA855 block. If the factory thermal management system gets overwhelmed, heat soak will cause the ECU to pull timing and drastically reduce your power. Drastically lower your Intake Air Temperatures (IATs) with a high-capacity performance intercoolers upgrade, and pair it with uprated, smooth-flowing boost pipes to safely handle higher boost pressures without expanding or splitting. Keep temperatures stable under extreme track loads with uprated oil coolers, and install oil catch cans to prevent harmful oil vapors from recirculating and causing severe carbon buildup on your intake valves.