Upgrade your Lexus IS250 with our Stage 1 Package , designed to deliver improved throttle response, faster torque, and noticeable power gains . Stage 1 Upgrades Include: HPS Cold Air Intake – maximizes airflow for stronger performance Custom Tune – optimized for your IS250 for faster response Dyno Results: Power Gain: +25 rWKW at the wheels Throttle Lag: Almost eliminated – torque now comes on faster With just an intake and tune , the Lexus IS250 experiences linear, smoo