2019/10/5

I bought 3 of these for my 4400cc engine.
I put them on the outside of the filter for fear that they would come off. I felt the smoothness and the lightness of the air.
However, in the second picture, the part I put on top was hidden when I put the filter back.
I got the confirmation that there was no problems, but it looks good so I bought another one to install. 
I feel like it blows up lighter and goes on smoothly and quietly.
My previous car was a 4400cc car with the Ram Air system and it feels as good as that one.
For the price of this car, it feels great.
I think there is a synergistic effect of the sports filter and 4 protruding mufflers.
The manufacturer's response and explanation of the product was very good and satisfactory.

2020/8/7

This car is a BMW 320i.
I put two of them in the box.
My impression of driving in ECO mode is that when I stepped on the accelerator at a traffic light, I felt like I was in the wrong place.
When I step on the gas pedal as much as before, it moves forward with more force than before I put it up!
Now we just have to hope for better gas mileage!

2020/11/21

It is the 3rd day after pasting, but it is effective for torque at the time of starting and engine braking with accelerator off. Since the engine brake does not work, it rolls well.The torque is also up and the number of revolutions is down.I don't know the fuel consumption yet, but 8.6 has increased to 9.1.I think it's worth more than the price, so I want to buy another one.I pasted it on the engine side with our rk5 Step WGN. When peeling off after 2 years, replace the double-sided tape, buy a new one, and stick it on the engine side.What I can say now is that I will definitely buy it two years later.

2019/12/14

This kind of product has existed for decades, but I hadn't seen it featured in a magazine in a long time, so I bought it. It is a simple product to put in the air cleaner box, but the result came out from the first 60km after the installation. The fuel consumption which was 11km/liter at best until now has increased to 13.1km/l. 

The sound changes immediately after installation, and the change is immediately felt, so it is the best product for the price. There is no need to buy expensive goods.

2020/10/21

It is a verification with RG1 of Step WGN that runs over 200,000 km. I think that it will change depending on how you drive and whether there is a signal, but the old fuel consumption was 10.5-11.0 km, but when AdPower was pasted, it became 12.2 km. Since it is an in-vehicle fuel consumption meter display, it is just a guide, but I was happy because the mileage exceeded 600 km from the full tank to the next refueling, so I ordered additional parts for light cars and motorcycles.