Fuel economy went from 19 to 21 on the freeway. Freeway was really the only thing I noticed. But it was definitely from the intake. I never saw 21 before, which was significant because that is what my 2003 5.3 Tahoe would get and I was frustrated only seeing 19ish from this thing(but figured all the extra power was worth it
![Smile :)](./images/smilies/icon_smile.gif)
).
The power gain was very noticeable and it sounds great when you put your foot down.
Like I said before, I can get these things and sell them already modified for you guys that are interested. We were going to build our own, but I never found a source for the MAF flanges...