there have been 2 threads started on this in the last month. no body has dyno proven gains for proof. most people will say they cant compare to some of the big brands like agp, etc. but dan made his runs using a ebay fmic. i also run the xo2 racing intercooler and i like it, i noticed a small gain, nothing spectacular. but it will help down the road for the future upgrades to come. btw i spent $250ish on mine.