It was reached an agreement and everyone was very happy.

After a few more greetings to Boss Li, Chen Guo left a few words, "I'll go out to talk to everyone and see if you have any other things you hope to improve." After coming out of Boss Li's office, he came to the car owners who were gathering together to chat. Chen Guo took out a box of Yuxi and scattered it to several car owners one by one, and asked with a smile: "Brothers, are you satisfied with the accelerator we have adjusted after retuning?"

Chen Guo doesn’t smoke, but not smoking does not mean he doesn’t know what to do. After lighting a cigarette, he put it between his fingers and hold it, and accompanying everyone to “smoke” together.

After hearing Chen Guo’s question, several car friends who were gathered to chat nodded...

"fine."

"I think it's good, it feels more comfortable than before."

"The throttle response is more sensitive. Brother, you spent a lot of time to tune it out, right?"

"The most important thing is that the throttle is just right, and it feels so comfortable. It's the same as my 325 throttle, just two words, comfortable!"

…………

Several riders said, all satisfied with the feel of the accelerator after retuning.

The throttle of the gw250 uses a double-pull cable, which is a relatively advanced configuration among domestic motorcycles. Among the domestic cars, there are very few cars that use a double-pull cable throttle, but this relatively high-end configuration has also been complained by many car owners because the owners generally report that the throttle of the gw250 is heavy.

Of course, this is not a big problem. The manufacturers must have their own considerations for making such a setting. Moreover, for many car owners, although the accelerator is a bit heavy, it is just that. However, when Lao Zheng used a 3D printer to print this electronic accelerator, he directly applied the ready-made template. As a result, Chen Guo felt that the accelerator after the re-tuning was just right, and the most important thing was smooth. It was really a silky smooth feeling. He applied it directly. Now, hearing that everyone's evaluation of the new electronic accelerator was so high, Chen Guo was relieved and nodded with a smile: "It's good that everyone is satisfied... Brothers, what else do you hope can improve it?"

What else can be improved?

Several car owners looked at me, and I looked at you, all shook their heads...

"There are front and rear abs, and now there is also cruise control. The accelerator is so good. I think there is nothing worth modifying in this car."

"That's right, I feel that it's just a 250 after all. What kind of power mode can I expect? Sliding clutch?"

"Ha...brother, if you can create a sliding clutch, assisted shifting or something, then that's awesome."

"It is best to report the traction control and curve anti-slip system..."

…………

This is actually just a joke. It is equipped with auxiliary gear shifting, sliding clutch, traction control and curve anti-slip system. Which one is not configured on high-end models among imported motorcycle brands? That's all, everyone has low requirements for motorcycles of grades. Now with ABS and cruise control, everyone is already very satisfied. However, there is a guy who has not spoken much before. He suddenly heard the quiet guy and asked Chengguo: "Brother, can you give gw250 a first-level?"

"Purchase the first level?" Chen Guo was stunned for a moment.

What is first-level brushing?

Simply put, in simple terms, in all vehicles that use electro-injection technology, the car's inhalation, fuel injection, ignition and other tasks are controlled by ECU. When designing the program and logic of ECU, manufacturers need to consider many influencing factors in the vehicle's use process, such as the climate, oil products, overall road conditions and car usage habits of the vehicle, etc., they will design the ECU program more conservatively, so that the hardware of the vehicle, that is, the engine, without major changes, can meet the design technical indicators, such as power, torque, fuel consumption, service life, etc., so under normal circumstances, the manufacturer is very conservative in the setting of ECU.

The so-called "first-step" is based on the fact that the manufacturer has very conservatively set up the ECU. Simply put, it is to "release" some of the engine's power "sealed" by the manufacturer without any modification to the engine's hardware, including the intake and exhaust system, by resetting the parameters of the ignition time, ignition time, gasoline mixture concentration and other parameters.

Because there is no modification to the hardware, the power increase of the engine after the first step is not particularly large. The power increase of the self-priming vehicle model is generally between 5% and 15%. The increase of the turbocharged vehicle model is usually a little larger. By adjusting the turbine pressure, after the first step is brushed, the power can theoretically be increased by up to 30%.

Of course, if you are not satisfied with the improvement of this power, you can also use the second and third stages. However, in the second and third stages, in addition to the need to make more radical settings of the ecu program, for example, in the second stage, you already need to take action on the engine hardware, replace the air filter with a larger air flow, increase the exhaust diameter, etc. When the third stage, you even need to replace the high-strength forging crankshaft with higher strength and higher accuracy, high-strength piston connecting rods, lightweight pistons, etc., and even install mechanical supercharger or turbocharger systems... In short, it is very complicated and a very complex system project. We will not discuss it here.

Most of the men who play motorcycles are also car enthusiasts, and are usually familiar with car modifications. Even if they have not tried the first, second, and third level, they are not unfamiliar with these modification terms. Now, when I heard this rider ask Chen Guo if he could brush the first level of gw250, his eyes lit up!

The reason why his eyes are shiny is that almost all gw250 owners are "deeply disgusted" with the power of this car!

To be honest, the power of the 18.4 kilowatts (25 horsepower) of the gw250 is not low. The air-cooled motorcycle engine with the same displacement cannot reach this power at all. Even the famous Yamaha, the Feizhi 250 produced in China, which is the former Tianjian King 250, has a maximum power of only 14.6 kilowatts. In the field, the power of the gw250 18.3 kilowatts is actually very exaggerated.

But the bad thing is that the gw250 is too heavy. The curb weight of 187 kg completely smoothed out the extra power advantage of gw250, and even had to look for it. In addition, due to the gear ratio setting, it is no wonder that the owner of gw250 joked: "I actually rode a water-cooled 125." So, after hearing this guy ask Chen Guo if he could improve the power of gw250 by brushing the first-level method, everyone was immediately excited...

"Yes, brothers, you are so awesome, you can even do a cruise control system. Isn't it difficult to get a first-level program?"

"Brother, if you can create a first-level program, as long as the price is right, I will definitely brush it..."

After realizing that the boy in front of him and the team behind him were a group of people who were very skilled in ecu development, these car owners who suffered from the weak power of the GW250 engine said to Chen Guo.

Chen Guo pressed his glasses lightly and activated Goudan's silent assist mode... Chen Guo remembers that it seems that the adaptive ecu program developed by the First Automobile Engineering Academy has this function similar to first-order adjustment, and it is a graphical operation interface, but isn't it really there?

As Goudan, who started the silent assist mode, projected the Ecu simulation debugging program on Chen Guo's retina, Chen Guo confirmed that yes, this set of adaptive Ecu software does have first-order program refresh function. Not only that, it can even allow designers to optimize the engine's power and output districts to a certain extent, such as optimizing the engine's front-section power output, etc....

Seeing this, Chen Guo was excited: It’s all small money!

"You really guessed it right," Chen Guo smiled and nodded, "To be honest, we are indeed developing first-level programs for gw250."

“…”

When everyone asked Chen Guo if he had a first-level program, they were actually joking more, but when Chen Guo said that his team was indeed developing a first-level program for gw250, several riders were stunned: Damn! Is this guy's words true or false?

It was the first guy who asked, who spoke first again. He was a little excited and a little doubtful: "Brother, are you really doing it? You really developed the first-order program of gw250?"

"It's definitely true," Chen Guo nodded affirmatively: "The program has been made long ago. I have been testing and adjusting it before. According to the progress, it should be possible to come up with the official first-level program in the past two days."

Um?

Have been doing it for a while, and before it was just testing and tweaking?

The guy who just asked was halfway through the question. He asked anxiously: "Brother, how much performance can be improved after you finish your first-level program?"

"The maximum power can be increased by about 12%, which is 3 horsepower..."

When I heard that it could only increase by 3 horsepower, several riders' faces were suddenly disappointed, and some people couldn't help but complain: "It's only 3 horsepower?"

"Brother, 3 horsepower is already a lot," Chen Guo explained to everyone with a smile: "Don't you think that the power has only increased by 3 horsepower, but in fact this is a 12% power increase, and the torque has also increased by about 4 Nm. We have also re-optimized and adjusted the external characteristics of the engine's power output to enhance the front-end power output of the engine, that is, the performance of the engine starting and the speed range before the speed of 60 kilometers per hour...

Let’s put it this way, after such improvements, we all said during the test that after level 1, the acceleration ability of a level street car before 60 kilometers can basically be comparable to that of Kawasaki Ninja 250.”

Um?

Several riders looked at me, I looked at you, everyone was scared by Chen Guo's words: the power performance of gw250 can actually be compared with that of little ninja.

A motorcycle of the level, but Kawasaki Ninja 250 has the fastest sports car with its curb weight of 158 kilograms, 20 kilowatts of power output characteristics. But now, this brother actually said that their first-order program can make the gw250 catch up with the little ninja?

Even if it is just before the speed of 60 kilometers per hour, that is, after the speed of 60 kilometers per hour, the gw250 is slowly falling behind, but even so, it would be a bit amazing.

And to be honest, I just mentioned this, but the first-level procedure of the other party has been almost adjusted. Why does this matter sound so suspicious?

But the guy who was most concerned about this matter nodded to Chen Guo and said, "Brother, just because you can develop this cruise control system. I believe you are a bit of real skills. In this way, after your first-level program comes out, I will first brush one for my brother."

"Of course there is no problem," Chen Guo smiled: "But, brother, you know this thing too..."

"Right, right?" Before Chen Guo finished speaking, the guy spoke: "Tell me, how much does your first-level program cost?"

Chen Guo pondered for a moment, and then said slowly: "Generally speaking, the first-level canning program of golf major factories is around 6,000 to 7,000 yuan, and the special adjustment program is a little more expensive, 8,000 to 9,000 yuan. Even the pheasant program created by domestic experts will start at 3,500 yuan."

Speaking of this, he paused slightly and observed everyone's expressions and reactions.

The first-order program is the most common for Volkswagen models, and the "severely affected area" is golf. Almost every golf owner, whether it is a 1.6-self-priming manual owner or a Golf GTI owner, has a heart of modification, and the first-order program of golf is the most common. The domestic pheasant program is about 3,500, while the "can" program of large manufacturers such as Apr and MTM is generally around 6,000 to 7,000. If the program needs to be sent abroad for special adjustments, the price is hard to say, basically starting from 8,000 yuan.

Sure enough, when I heard Chen Guo say that the cheapest pheasant program costs 3500, several people's faces changed slightly: the cruise control system has just been modified and it is 3500, if there is another 3500...

I knew it was this!

Everyone's reaction was not beyond Chen Guo's expectations. He continued: "But gw250 cannot be compared with golf after all, the cheapest 1.4t golf starts at 140,000 or 50,000 yuan, and the 2.0t gti golf even exceeds 200,000 yuan, while the price of our gw250's naked @ car is less than 30,000 yuan. If you ask everyone to use 70,000 or even more to increase the price of such a tiny motivation, I guess everyone is not happy.

So after I discussed it with everyone, the determined price was no more than 2,000. As for the specific amount, we have not discussed the final result yet."

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Chapter completed!