Traction sign I have 98 GS 400, the Traction sign has lighted and check engin, but when I tried to drift the traction worked normally, so please any solution?

Lowering a car is essentially lowering the center of gravity thus improving body roll when cornering especially at higher speeds giving you more control of the vehicle. Depending on the rate of the coil springs installed it will determine how responsive the ride will be. I would recommend a 1" to 1.5" drop. Any lower than that will affect the chamber more severely leading to advanced inner tire wear because the wheels will be tilting inwards much more (this condition is called negative chamber). An aligment is highly recommended after lowering the car. I installed H&R springs on my GS400 with the stock struts. It was a 1.5" front and and 1.3" rear drop and still a great ride in terms of comfort. Recommended brands for coil springs are Tein, Tanabe, Eibach, H&R or basically any proven Japanese or German company that makes spring coils. They cost appr. $200-300 for a set of 4 coil springs. Lowering a car is essentially lowering the center of gravity thus improving body roll when cornering especially at higher speeds giving you more control of the vehicle. Depending on the rate of the coil springs installed it will determine how responsive the ride will be. I would recommend a 1" to 1.5" drop. Any lower than that will affect the chamber more severely leading to advanced inner tire wear because the wheels will be tilting inwards much more (this condition is called negative chamber). An aligment is highly recommended after lowering the car. I installed H&R springs on my GS400 with the stock struts. It was a 1.5" front and and 1.3" rear drop and still a great ride in terms of comfort. Recommended brands for coil springs are Tein, Tanabe, Eibach, H&R or basically any proven Japanese or German company that makes spring coils. They cost appr. $200-300 for a set of 4 coil springs.