2004-05 GTO Mass Air Flow Sensor, High Flow-SLP's high-performance 85mm mass-airflow sensor flows a whopping 895 CFM (90 more than the stock 75mm MAF)?enough to improve engine output by up to 10 horsepower. Or, remove the screen (not recommended on street cars) for an incredible 1000 CFM of air flow! This lightweight composite unit weighs one pound less than the factory MAF and is fully capable of supporting engine applications making over 600 horsepower. Specifically calibrated to provide optimum performance in GTO applications! NOTE: For use with stock PCM tuning. Photo may not show all included hardware. Not street legal in California Shipping is not included.