I did notice less fuel consumption, nothing in terms of performance or efficiency with power. Added 1.5 miles per gallon more. Still worth the money because I feel after five fill-ups I got my money's worth.
Verified purchase: Yes | Condition: New
really if it works notice the difference in terms of saving it is advisable to buy this device .. I am happy with the product
Verified purchase: Yes | Condition: New
Excellent product. Made of high quality materials. Extra easy to install. You can feel the difference in engine performance!!!!
Verified purchase: Yes | Condition: New
Wow, more power better gas mileage I am convinced now! I had my doubts when I first saw it but I'm a believer now, I've had it on my little Mazda for 2 weeks now and I can tell decent difference, it's well worth the money I promise!!!
Verified purchase: Yes | Condition: New
I put them in and I seemed to loosed quite a bit of acceleration. I took them out after two weeks and got my power back. Seems to constrict airflow rather than force it through faster.
Verified purchase: Yes | Condition: New
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