What's comical is your reply. I used them 20 plus years and have always got 15 to 20% better gas mileage. I haven't used the Napa gold so not sure about it.This are my findings. Take them however you want to.
I had two builds one 2 door base one 2 door badlands.The base has a build date and vin.The badlands nothing.I recieved a call from my dealer saying my bronco was in. When i got to the dealer it was the badlands not the base...So I dont know what these people are doing.No word or nothing and it...
I was at milan drag way with my friend he was tuning his car for race day. So For fun we wanted to see what my bromco would do..
Its a 2dr badlands on 33 a v6 auto on 93 octane ..It ran a 0 to 60 in 4.9 .and quater mile in 13.2..that was the best out of three runs. ..the others are 5.1 and...
2001 , 2002 and 2003 focus 2007 fusion, 2008 f150
2013 escape, 2015 sentra, 2018 tacoma and others all average around 15% improvement after I installed one.. I put them in my car after the second oil chane .But hey Its American use what ever you want ..lol