i've seen alot of these floating around on ebay. i was wondering if anyone's experienced using one of these? they say that the "butterfly" runners increase HP big time but i wasn't sure. i've also heard that they're a bolt on for 2g's but that didn't sound right.

From everything I've read, those that get JDM engines scrap the Cyclone Manifold for the 1g stocker. Remember: the more gadgets you have, the more gadgets you can break.

I've heard they aren't so good either!!!

i've heard both sides. Some argue they're great, some don't. In either case, we have 1 or two sitting on the shelf, and would probally be cheaper than an ebay auction.