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1/2 /4 pcs x Car Fuel Saver
Rodrigo
Reviewed in the United States on February 10, 2025
Does not work
Integrity
Reviewed in the United States on January 31, 2025
The media could not be loaded.
LaVaughn Johnson
Reviewed in the United States on January 10, 2025
The device was easy to connect and I do believe I have it synced correctly. It would be nice to have a mobile app to confirm results and successful connection.You are required to drive your vehicle for at least 150 miles before they say you will have results. I am past 3,000 miles and MPG seems to be worse.I will try to contact the manufacturer for feedback and assistance. I believe the device was supposed to come with a guarantee.
JNEC
Reviewed in the United States on February 5, 2024
It helps to saved some in gas
Celena Petty
Reviewed in the United States on November 6, 2024
I decided to try the Eco Tuning Box Chip to help save on fuel costs, and I’m pleased with the results so far. It was super easy to install—just plug it into the OBD2 port, and it was ready to go. I’ve been using it for a few weeks now, and I’ve noticed an improvement in fuel efficiency, saving around 10-15% as advertised.This device is a great, budget-friendly way to optimize fuel consumption, especially for long drives or daily commutes. I would recommend it to anyone looking for a simple and effective way to reduce fuel expenses.
Destiny Illingworth
Reviewed in the United States on December 8, 2023
product works so well keeps my numbers up
Mark T R
Reviewed in the United States on December 12, 2023
I didn’t see any fuel savings after using this
Martin White
Reviewed in the United States on October 30, 2023
This product claims to improve fuel mileage, but in actuality it decreases the efficiency of the motor by providing false readings from the sensors in the engine. After using for only 2 days, this unit decreased my fuel economy by 10 miles per gallon, and made my vehicle rattle and shake at a standing idle. Upon taking this unit out and resetting the computer in my vehicle, it is running just fine. DO NOT, AND I REPEAT DO NOT BUY THIS PRODUCT FOR ANY REASON! Luckily this lesson only cost me a few dollars instead of a new engine for my vehicle. Shame on Amazon for letting people sell snake oil products without verifying that they actually do what they claim.
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