I guess the part that blows me away is that the two latest naysayers are MOPAR owners. Now someone is doubting the info put forth in that thread! Can you believe it? Ah well I guess the only way to "prove" anything when people don't want to believe is to have multiple witnesses, sworn statements, videos, and have you hooked up to a lie detector.
http://mustangforums.com/forum/5882871-post144.html
If that were true then all the 5.7 (Chargers and Challys) would see that improvement. It is known that the stock filter / intake on those cars is a mess but the guys in the past who have done the same mod see an improvement, but not that much of an improvement.
That guy has a Charger.