AS Performance Inlet manifold for Focus Mk2 ST & RS - Gloss BlackWe have taken more time than most perfecting our manifold to what you see here, we tested several designs which include a square to tapered manifold which unfortunately didn't work and then our Gen2 design finally got the go ahead after month's of testing. After completion we found there was more gains to be made and instead of selling a manifold for the sake of getting sales we held off the release while our development technicians matched the Inlet