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  1. roush intake w/snorkel

    Focus ST Performance
    Is the roush Cai box compatible with ford racing snorkel? Does anyone have this set-up?
  2. exhaust question

    Focus ST Performance
    I've been trying to do my research on exhausts as well as down pipes for my st. I'm learning as I go and enjoy learning new things regarding mechanical systems. My question is what downpipe would be a good fit or for that matter are they all compatible with a roush cat back exhaust? Or does...
  3. Roush CAI Before and After Videos

    Focus ST Performance
    I kept my ST stock last year and did a few autocross events and a couple of track days. One of the highlights of 2013 was passing my father-in-law on the front straight at Summit Point in my stock Focus ST with him in his 580 HP Camaro ZL1. I know that starting with the modifications just bumped...
  4. Focus ST Roush Cold Air Intake Kit Installation Video 2013

    CJ Pony Parts
    421609 Mustang Roush Cold Air Intake Kit Focus ST 2013 | CJ Pony Parts This Roush Cold Air Intake Kit is for the 2013 Focus ST and will add horsepower, along with enhanced sound to your car. Included in the kit is a premium high flow air filter, a silicone coupler, an aluminum induction tube...