Not sure which 2000 Pontiac Firebird Air Filters are right for you? We have over 247 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Jonathan S from Fairborn, OH said, "K&N Filters are the best. I havn't noticed a mileage improvement in my 500hp Trans Am but I can feel a serious improvement in throttle response. Great product A+++++"