Running smoother Got these, installed them into my Jeep, and so far, it’s been running smoother and more economical than before. Previously, I was getting ~15 miles per Gallon, now it’s 20 MPG. Horsepower has increased, and the acceleration is faster than before. James C., Verified Buyer Spark Plugs 5 2020-01-03T21:41:41+00:00 James C., Verified Buyer … Continue reading Running smoother