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

Hello, We installed these performance chips on a freshly overhauled 1996 Chevy Corvette and a 2021_Chevy Spark. The gain,in power and torque is noticeable and gas mileage went up too. Some people said they did not work but there is a reset hole on the front of the performance chip that you use a wire or a,needle to push it in. Once its set if you remove it to work on the cars you do not have to reset them again. They have a memory and they will reconnect to your cars computer. The automatic transmission shifts quicker on both cars and they both have faster acceleration! Installation instructions are on the box!

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 actually lost 7 mpg but my engine runs smooth again. My obd port is hard to get to, so I also use a splitter so I still have access to the port

After a couple of weeks using this product and one of my trucks I could tell the different thin gas gaining about 3 mi extra to the gallon in a V8 I recommend trying it

I have had mine for about two weeks. It started flashing green when I plugged it in and it's still flashing setting our driving even with the key off

followed instructions exactly - got to the part where you push the reset button and found - there is no button ! tried to get product help and it showed me a vedio of something else ! i think this product works a little, but can't be sure !

Notice a big difference in my gas usage.

I bought this in February for my daughter and myself. It may not look like it's working but now that I've taken a trip 4 hours both ways my gas suddenly jumped to getting 478 miles to the gallon. I have a Nissan sentra. You have to give it time to work. Its also for better for people who travel. Thats when i saw the difference and it stayed. It keeps going up. You all give up to fast.