Hello Well ive got a turbo head with a high lift cam i havnt got new dyno sheets yet but ill be sure to putem up when i getem., How do u put it up ????????Anywayz the gains are pretty good i dont got numbers but it has a nice gain , ive lost no bottom end probs because my turbo spools so quik.Feels like bout 20 hp more maxx i think the company says 50 or but there full of shit!!!!!Im goin to dyno soon!!!!!