I'm not sure where these 25-30 hp quote are coming from. I searched and most feedback I've seen on aftermarket intercoolers (specifically Stillen) talk about a 10-12 hp increase which isn't much more than the Ebay intercoolers. Even Stillen's stage chart shows an estimated 10 hp increase with Stillen intercoolers. So where are these supposed 25hp figures coming from? The AshSpec Massives? Personally I would rather save $400 and put it toward a transmission cooler or some other item I also need. $400 isn't exactly pocket change. Plus This intercooler, downpipes, and testpipes would produce more hp than any intercooler listed for the same price. Now quality.... that is a whole different arguement...I wish more people had tried these in the past so there could be more feedback than just one person. Maybe I'll be guinea pig # 2...