2 PCS Automobile Power Upgrade Fuel Saving, OBD2 ECOOBD2 Automotive Plug and Driver Single Plate, Automotive Energy Saver Accessories, Universal for Most Cars (Green)

Notice a big difference in my gas usage.

Road trip: MI to FL. 2023 F150 V8. Day 1: 7 hrs driving time, mostly flat terrain, unit plugged in, 18.5 mpg. Day 2: 8 hrs driving time, some hilly through TN and GA, unit removed, 23.2 mpg. Unit was returned as soon as I got home. Did absolutely nothing to improve fuel efficiency. Should have listened to some of the other reviews, but since the trip was already scheduled, thought I’d test it for myself. Big fail. Do not waste your money.

I only just put this in my car a week ago. I’m not really sure on how affective it is yet. I will update but it’s cheap enough to take a chance. I bought the 2 pack. Gave one to my youngest. I’ll get her input also

I put this my girlfriends 2019 Toyota Camry and instantly noticed the idle was smoother but the power performance was very noticeable. I drove 284 miles from San Diego to L.A. Getty museum and back. My average mileage prior has always been 28.9 mpg, after the trip it dropped to 28.4 which it has never fluctuated like this in 3 yrs. I use cruise control most of the fwy driving so that peaks for itself. My opinion is there is no value dollar wise, the value is clearly your vehicle runs smoother and is more powerful. It was so easy to install and it appears to be very well made but the real question is how long will it last and will effect the vehicles computer long term....

Great product and price. Great Fit.

If I could make zero stars...Total Scam!I have examined the device fully. There is no actual connection inside between the vehicle and the device except for power and ground. These are used to power the lone IC inside, which is a cheap LED driver used to "light the pretty lights" (3 LEDS - 1 red, 1 yellow (flashing for effect) and one green). There is no way for it to communicate to the car, therefore there can be no benefit of any kind (except to line the pockets of the seller of the device).

I bought this before a 2,000 mile trip. I noticed the difference around the third tank of gas. I went from 19 miles a gallon to 31 miles a gallon. It is still working almost a year later. I know it will not have the same results for all though for the price it is worth a try.

Perfect fit and easy to install. Will see the mileage effect after driving 150+ miles.