
Originally Posted by
Chubminnow
I have a 97 Chevy, 5.7 liter, 4-wheel drive and like everyone else, would like to get the most bang for the buck when it comes to gas mileage. I've seen various air filters that look huge with big old "ducts" leading to them that are approximately 4" in diameter. Has anyone here bolted one of these products on a similar truck and if you have did you notice a difference in mileage?
Any other bolt ons available? I suppose dual exhaust helps but in the past I never could tell much of a difference on my previous vehicles, of course too way back then I didn't run duals for gas mileage purposes either, lol...