AFE Stock Replacement Filter 99.5-03 Ford 7.3L Powerstroke filter option:standard 5 layer No additional fueling modifications are

No additional fueling modifications are needed but can be added to maximize overall performance

there is a major degradation in the performance of the stability control (ESP)

you could install a cold air intake for inreased airflow

And while the intercooler out performs stock

AFE Stock Replacement Filter 99.5-03 Ford 7.3L Powerstroke filter option:standard 5 layer No additional fueling modifications areFEATURES & BENEFITS: 100% polyurethane construction will not deteriorate over time to heat or chemical exposure Washable reusable media with deepest pleats in the industry Open consistent pleat distribution for excellent airflow Progressive bump seal eliminates need for sealing gasket or grease