Overall rating 
4.4 / 5
4.4 / 5
Appearance 
4.6 / 5
4.6 / 5
Ease of Use/Installation 
4 / 5
4 / 5
Quality/Construction 
4.6 / 5
4.6 / 5
18 out of 21(86%)reviewers recommend this product.
Product ReviewsWrite a review
Overall rating 
3 / 5
3 / 5
Not worth it
PostedApril 24, 2012
Cons: No gas milage gain.
I have a 2001 ford ranger edge. It made absolutely no difference in gas mileage or power. My truck is in excellent shape with a cold air intake and throttle body spacer, so i have no idea what would cause these not too work.
4 of 5 found this review helpful.
Overall rating 
5 / 5
5 / 5
fromColorado springs, colorado
How often do you shop at JC Whitney.com?Multiple Times a Year
Great totally worth the money
PostedJune 20, 2011
Pros: They work!
Cons: Not a bad price for the product but as anyone would say wish they were cheaper
Saw a difference in both HP and mpg the second I put these in got a them for my 2011 silverado and live in Colorado springs elivation 6000+ feet and put this in with a volant cold air intake and I get 36 mpg intown with all 8 cylinders going 45 with V4 shut off love these. My silverado runs like a beast with the mpg of a Honda almost
16 of 20 found this review helpful.
Overall rating 
5 / 5
5 / 5
fromIowa
How often do you shop at JC Whitney.com?First Time
They work
PostedMarch 18, 2011
Pros: More power and MPG
Cons: Need color variations, dont recmnd E3 plugs.
I installed on my wifes 1999 Bonneville along with Accel coil packs and OEM Delco Iridium plugs. The engine runs smoother accelerates quicker, also has a whine to it almost sounding like a SC 3.8. Mileage has improved by 2 to 3 MPG. Now getting 430+ on 1 tank, and I'm not gentle on this car.
8 of 10 found this review helpful.
Overall rating 
5 / 5
5 / 5
fromNJ
How often do you shop at JC Whitney.com?Multiple Times a Year
MPGs
PostedDecember 19, 2009
Pros: Easy to install, does what it says
I put these in my 1995 Jeep Cherokee Sport. Before installation I was getting 13-14MPG. Now I get 18MGP around town and have gotten 21MPG on HWY. I will put a set of these in all of my vehicles.
20 of 22 found this review helpful.
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