SVT airbox appears to be good to about 200 wHP with the many dyno's I've run and seen, but that is on a 3L which is wheezing its way up to 200 wHP. Just pulling stock SVT filter off for one run was good enough for a 5-6HP gain in back to back runs.

For the 2.5L with less displacement it my start affecting things lower, in the 180 wHP range.

Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black