Camaro Firebird 85-89 305 / 350 TPI Engines running with a MAF (NOT SPEED DENSITY 90-92) Granatelli Motorsports Mass Air Flow Sensor, Direct OEM replacement, won't void your factory warranty •Improves mileage and throttle response •Chassis dyno proven to add 8-25 horsepower (depending on application), 60% airflow increase over stock •Improves performance from 2,000 rpm to red line •"Truly Calibrated" on our in-house MAF Dyno and Flow Bench to optimize performance for YOUR specific application •Compatible with most electronics and aftermarket bolt-on performance equipment •Installs in 10-15 minutes using basic hand tools.