XFI™ No Springs Required Blower 228/235 Hydraulic Roller Finger Follower DOHC Cams for 2011-14 Ford 5.0L Coyote. Big power gains in mid to upper RPM range for blower kits with higher boost. Requires custom ECU programming. Requires cam phaser limiter kit Part #5493 or optional cam phaser lock kit #5492 for race applications.
