"How good is this...Old Cao, please thank us, Mr. Ji, you haven't earned so much in so many years!"

After taking the plastic bag from Ji Dongqing, Cao's sick wife took a look at it and saw that there were four whole piles, and her whole body was shaking with joy.

"Why do you, a woman like you, accept money so casually? It's not easy for Mr. Ji to make money..."

"Take it, Brother Cao, I'm counting on you to give me more effort next year. If you make money this year, everyone should take more. When you can't make any money, Brother Cao can just support me!"

Thinking of the country's development situation, Ji Dongqing doesn't know when he will stop making money, so the repair shop must firmly grasp it.

"Definitely!"

"Mr. Ji, don't worry. As long as we ladies are here, Cao Bing will not go anywhere. He will just follow you. If you say hello, I will follow you. Our family is not well educated, but we are not blind!"

In fact, Ji Dongqing could hear what people were saying. Cao Bing had already bought a house in the village for less than 10,000 yuan. When Ji Dongqing's car entered the village, Cao Bing's mother-in-law and his family came out to welcome him.

"Quickly, give me the child. See how cold my grandson is. Do you miss grandma..."

"Mr. Ji, come in quickly. The stove has been burned for a long time and is waiting for you!"

The two families are not far apart. A year ago, Cao Bing was despised by everyone, but now he is the favorite of the family. Everyone knows how he came to be.

"It's okay, the car has air conditioning, come and move things!"

Ji Dongqing opened the cargo compartment of the car and a group of people moved out the New Year's goods. Ji Dongqing declined the invitation of Cao Bing's family to have a meal and returned to the company to start studying Liu Yuhan's modification of the car.

"Cao, you give in, it's really..."

Seeing that such a big leader did not come to the house for dinner, Cao Bingzhao's mother became angry.

"Mom, what do you know? There are several blocks of people queuing up to treat Mr. Ji to dinner. They are all respectable people. They are not allowed to be busy. Find a driver to take us there, or not, it doesn't matter. They will do it in person.

A piece of paper can make a nose as big as a face, that's right, you should stop getting involved, Cao did nothing wrong!"

Cao's sick daughter-in-law is now more tempered than before, so her parents don't have to worry about it anymore, and they can go home and brag after sharing the New Year's goods.

According to national regulations, the exterior modification of a vehicle on the road must not exceed 30%, otherwise it will be illegal modification.

As for the interior, you can modify it as you wish, and it will be similar to the decoration at home.

If you want to run F1, traditional seats will definitely not work. Ji Dongqing directly installed a balanced seat with automatic adjustment function for the opponent's driving position.

The seats of the remaining seats should also be changed accordingly to avoid imbalance in the car and affect the overall performance of the car.

For the air intake, this Mercedes-Benz has already adopted turbocharging, but it needs to be changed here in the center grille to reduce resistance as much as possible.

High-flow intake style, mushroom head is a must for this kind of modified car, which reduces the air intake resistance of the air filter.

Increase the intake air flow and oxygen content of the engine cylinder to make combustion more complete, which is directly reflected in increased horsepower, more sensitive throttle, and faster engine speed increase.

Even if the air intake is smooth, it won't work if the exhaust is not smooth.

The entire exhaust line needs to be modified. The S-shaped tail pipe has absolutely no problem in reducing noise and air pollution.

However, the engine power loss was also relatively large, so Ji Dongqing directly changed it to a straight exhaust pipe, and the necessary modifications were also made to the body.

This kind of straight exhaust pipe has small holes on the side wall, which are used to eliminate the treble part of the high-speed airflow and retain the bass part, making the sound deeper and closer to the feeling of a racing car.

Although the noise will be a bit disturbing, this is the effect we are pursuing. As for the air conditioning system, the position should be changed to prevent this kind of smoke from escaping in.

NGK iridium metal spark plugs can strengthen electric sparks, have high durability, and can effectively improve the explosion effect in the cylinder. There are two types: 6 degrees and 7 degrees.

Liu Yuhan's Mercedes-Benz engine has a displacement of 2.6, and Ji Dongqing directly chose the 7-degree engine!

The burner wire is the wire that connects the spark plug and the battery. Generally, the resistance of the burner wire is 5.5, and the burner wire used by Ji Dongqing is only 2.2.

The burner wire for modification generally consists of 4 wires, corresponding to four cylinders. Each wire has five cores, while the general burner wire only has one core in each wire.

This kind of modification can make the car extremely powerful and make the horsepower even more powerful.

Brake discs, in order to effectively improve braking performance, Ji Dongqing changed both the front and rear wheels of Mercedes-Benz to disc brakes.

The disc brake system is exposed to the air, dissipates heat better than drum brakes, and has a more obvious braking effect.

Good brake discs are available in Shanghai or Dalian. When Ji Dongqing refurbished Opel and Gas cars last time, he purchased them directly from the Dalian manufacturer, and the results were very good.

According to Liu Yuhan's driving method, Ji Dongqing has to buy at least twenty sets to meet the sisters' needs at one time. Of course, there will be novices in the future. Those are the owners who not only waste gas but also cars. Thinking about it, Ji Dongqing's scalp goes numb.

The secret passage cannot afford it.

Between alloy brake discs and cast iron brake discs, Ji Dongqing finally chose cast iron brake discs, which are economical, affordable and wear-resistant.

Steel hose is also an alloy brake oil pipe.

Ordinary brake oil pipes are made of rubber and lack some strength. If they are made of alloy, no matter how bumpy the road is, the brake oil pipe will be guaranteed to have no problems. Otherwise, with Liu Yuhan's personality, a few kicks will deflate the oil pipe.

The price of this set is not cheap, and Liu Yuhan can afford it according to her personality.

The oil breathable bottle can reduce engine temperature and increase cylinder durability. Its working principle is to collect oil vapor and prevent secondary combustion of the vapor, which mainly protects the engine.

When Ji Dongqing repairs almost every Mercedes-Benz, he will replace it with one to protect the engine. This is a conscientious job and the price is not expensive.

The main function of the ground wire is to guide the leakage current in the car to the ground and stabilize the current when the ignition coil is powered. When the current is stable, it can effectively protect the electronic equipment such as audio and circuit boards in the car, and make the engine ignite and explode better, and the lights will be brighter.

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The balance bar is the most commonly used modification part for car modification enthusiasts. It can effectively improve the anti-roll performance of the vehicle and make the driving more stable. It is installed in the hood and effectively increases the rigidity of the body.

This kind of thing is most common in Babo, almost every car has it, family cars like Mercedes-Benz are rare, Ji Dongqing is also on the list, carbon fiber is considered a new material.

BASF shock absorbers are a must. Ji Dongqing ordered three sets directly from Boss Gu. At worst, they will be given to Dong Na when the time comes.

Tires are easier to deal with. They are all Michelin on the market. In order to increase the grip of the tires, Ji Dongqing directly asked the senior fellow in Dongying to make a formula and ten sets of tires, and try to distribute them as much as possible before the year.

As for the price, Ji Dongqing didn't worry about it and left it to Boss Liu to make his own decision.

The differential speed must also be exquisite. The gears can be made of normal powder metallurgy, and then ground accurately. Everyone who plays with machinery and modification knows that electricity is always just a supplement to machinery and cannot be replaced. If you want to do it well, you have to adjust the machinery yourself.
Chapter completed!