Steeda works directly with Ford, their intake is based off of cad data Ford provided them. Also you have Steeda serialized cars with the Steeda intake I would not worry about warranty with it. I've had mine for going on two months and could not be happier .
Dyno numbers: 177hp/163tq
Mods: Steeda Intake, STS Kit, Rear sway bar, Lowering springs, Steeda RMM, Magnaflow catback, SCT Tune
Moderator: Third Generation Ford Focus, DURATEC Ti-VCT GDI Performance Chat & Florida regional section