Air box lid

[BamBam730]

If you install a K&N Xstream power lid on a 2004 400ex, do you need to rejet the carb or make any other modifications?
http://i266.photobucket.com/albums/ii243/bambam730/kn_pwr_lid_400ex.jpg

[boosted3g]

you will need to rejet

[08400EX]

K&N includes a couple of recommended jets with the PowerLid.

[BamBam730]

Than you for you responses. I appreciate the clarification.