Same, after my install highway mileage went from 26 avg to 28mpg.I saw an improvement once installing mine. I did open the hole up in the valance cover. I’d estimate a 1 to 2 mpg improvement over stock. Definitely an improvement on highway acceleration get up and go now.
Since putting the Big Mouth on over the winter, my mileage has gone up (per the gauge) from 17.4 to 18.7 lifetime, that is, since summer 2019. Admittedly, this is totally unscientific since we have changed over to summer, summer gas, I am doing more freeway and highway driving post-pandemic, and, since I am more aware of mileage issues thanks to the the BM, I may even be hitting the turbo less heavily than before. Still, with a tuned engine, more aggressive tires, FX4 (heavier, less aerodynamic, no air dam, etc.), and a two-inch leveling lift, 18.7 (and climbing) is not bad in my book! My 2014 Explorer Limited never hit 18 MPG in its whole life, and so I am satisfied with my Ranger MPG, and, yeah, the BM may be helping....
So do you notice any gains even though previously you thought it wouldn't do much? MPG gains, sound gains, cooler temps?
Thank you for the insight Langley. Excited to install mine and see what it's all about.
IIRC, your alternator will go before the intake since it sits much lower. Also, please correct me people if I am wrong but there isn’t enough air sucking in from this because it’s not directly attached to the intake. It’s “goal” is to provide colder air near the air scoop. Not one full connection.
