Myth: big brands equal high performance

 I believe this is the most common phenomenon when converted tires , many owners have a high-performance product is equivalent to the existence of big ideas, in fact, the more often the big brands , the more the production of tire models. For example, we are more familiar with Bridgestone , Michelin this brand , down to the mini passenger cars , from F1 racing has a corresponding product , even if the car is designed and developed specifically for the tire , each brand also has a different user different models of the series , and some focus on comfort , some focusing on grip performance ( dry land , wetlands, snow and ice also have broken down models ) , while others focus on durability, some just cheap. So when choosing tires, to know their needs, remedy. It simply is more important to choose a tire than the brand and model series . Of course, the brand has a wealth of racing experience often superior in performance sport tires.（turbo chra cartridge）
 For example , the picture above is a good drift through a campaign designed specifically for sports tires, while the right is a popular and comfortable Michelin car tires , the first to note is that there is no belittle both with and praise brand meaning. Just on the visibility , the Michelin has the absolute advantage , but if look at the performance of these two sports tire products , the ENERGY MXV8 Michelin tires on a lot less. So when choosing tires, design features and styles sure to tire in the first place , followed by consideration of the brand on . There is no particular brand of tire will certainly good at sports , or a certain brand of tires must be more comfortable saying , because each has a different brand of tire positioning products.（mitsubishi td04 turbo）
● Myth: focus only on dry performance , ignoring the midst of the actual road conditions
    Most models at the factory tires are supporting both the durability, comfort and adaptability to select a variety of climate and road and other aspects to consider later. Because a lot of cars , it is necessary to run a flat highway , it can cope with the bumpy country road , but can not be raining, snowing weather so baffled . For owners of ordinary roads , if only focus on dry tires gripping performance when choosing a tire tread rarely even use a semi- slicks ( also known as R tires ) , although you can exchange for extremely sporty performance However, the extreme design makes other performance greatly reduced , or even to meet the needs of everyday use .（mitsubishi shogun turbo）
    So for a tire intended for year-round use of the owners , even aside durability and price of such practical problems , partial athletic type oriented tires, such as the Ruckus Hallmark A050, Dunlop 03G R tires are not suitable for this weather use , even though they are very good dry performance .
And like family day stroke Bridgestone (Potenza) series , Michelin PILOT SPORT series , Pirelli P Zero series, this type of street tires are a good choice , these tires with good grip both performance and durability sex , drainage and comfort on performance and not too extreme , so these series of street tires are often used on the original supercar , while the price of this tire will not have to be too far off the mark .

Myth: The wider the better, the blind pursuit of large-size

With our more familiar 1.5-liter Fit , for example, the original tire size 175/65 R15, in the case of power systems and suspension systems without modification , in accordance with the principles mentioned above , modification Fit tire size limit should be 205 / 35 R18, this time with the original models tire diameter deviation of 1.2% , a reasonable range.（turbo chra） But I believe attention over the tire 's friends will find , 205/35 R18 tires this size is too strange, hard to find in the market. And 18-inch wheels will undoubtedly increase the unsprung mass ( of course expensive forged wheels may be lighter ) , the horsepower itself is not large , it will fit a certain burden , so the wheels decreases One, then strain the tire size 205/45 R17, diameter deviation of 1.3 %, which is a reasonable range .（CT12B turbo）

In recent years HellaFlush style modification is sweeping the world , this modification will be in the tire and rim with brains, use a very wide wheels with narrow tires sidewall distraction , creating exaggerated visual effects, and not reasonable camber settings to create a trimming effect ( wheel and fender gap as small as possible ) , but this modification will make the car lose their driving performance , even dangerous . Tire wall deformation changes the direction of the force , so that the tire is overloaded state, which greatly increases the chance of a puncture , causing a puncture at home and abroad because of this modification cases are not uncommon . While too much camber cause tire wear , dramatically shortening the life of the tire and lose their grip performance . Of course, we need to acknowledge the existence of that is reasonable , HellaFlush precisely with this unreasonable and settings , playing a unique modification trend. But for everyday car , we are still not recommended.（toyota landcruiser turbo）

attention to the brand and the quality of modified headlamps

 Currently modified car headlights wide variety of pieces , a huge price difference , weeding, especially car headlights and directly related to the personal safety of driving at night , it must be particularly careful selection. In terms of the more common halogen bulb , from 30 yuan to 400 yuan one pair of one pair has , bad -name is not high brightness bulb life not only limited , but also may burn lines. From HID xenon headlights , the price differences between different brands is also evident , as HID xenon headlights is a very complex process and technology parts, bad HID often short-lived , stable and very easy to burn the bulb bad, and the brightness and color temperature of the scattering angle is also often do not meet the requirements, so the best choice for a certain well-known manufacturers of products, such as Osram, Hella , Philips, Koito (mì) so as to avoid Tanxiaoshida .(nissan coilovers)
    ☆ modified headlamps must be the premise of safety(turbocharger cartridge)
Some owners turn HID lights tend to cause passers resentment , on the one hand , some people due to cool some selected high color temperature light -colored bluish HID, then this will be particularly blue light to stimulate each other passers-by and drivers eyes, not only people unhappy , but also affect safety ; hand, many owners do not pay attention to driving at night with lights rules, such as opening the wrong car beam , indiscriminate flashing lights, and so on. In fact, car headlights overseas for many regulations and restrictions , especially xenon headlights , for its color temperature, brightness and angle are clearly defined . Although the domestic legislation in this area is not key to the whole , we should choose in line with overseas safety regulations modification HID, because these laws are based on the bottom line of safe driving requirements formulated not to take his own life a joke .(subaru coilovers)

ECU modification principles

We have learned that the engine control system is simple and is composed of three parts , namely, sensors Sensor, the central control unit (ECU) and actuators , in theory, as long as these three systems are working properly , the engine can operate normally ( other hardware normal state ) , the normal work of the internal combustion engine is only the minimum required . Performance aside part of engine displacement , parts strength , precision, intake and exhaust systems , ignition , fuel system, cooling system, do not say, alone ECU programmed , the original vehicle ECU program set take into consideration the performance of the vehicle emissions , fuel economy , durability and other issues, even taking into account whether for urban roads ( power output characteristics , emphasizing the low torque output ) .(turbo chra cartridge)
    Original computer according to different load and engine speed , set one of the most stable injection and ignition parameters , so that the combustion temperature is neither too high nor make the mixture too thick or too thin, taking into account the different regions of the fuel quality difference ( ignition timing control conservative ) . But since it is widely used , then this setting must be more conservative . By changing the ECU program to more precise control of fuel injection, ignition timing , etc. can enhance the combustion efficiency or power performance of the engine. Also, or both.(turbo chra)

  We must first understand the principle of the internal combustion engine through fuel combustion , explosion and generate power , then the ratio between fuel and air is very important. Lean fuel mixture ( air-fuel ratio is greater than 14.7 ) can be fuel-efficient , rich mixture ( air-fuel ratio of less than 14.7 ) can provide greater impetus. Of course , the so-called concentrated or dilute , will ensure that the engine is under normal operating conditions, the mixing ratio is too low or too high , can not get a good condition , the different operating conditions of the engine air-fuel ratio adjustment will have different, everything depends on the specific circumstances.(renault connecting rods)

 Take an example air-fuel ratio , will not change the properties of a simple modification to an aspect often requires other components with changes, such as the oil system, but often because then increase horsepower , and to reduce the knocking and better distributing the engine Why the heat will be transferred after multiple fuel injection quantity, so to improve the dynamic performance involving not often tend to be more expensive oil before conversion , and enhance dynamic performance appears even smoky flame phenomenon it is not difficult to understand.

USA K & N Air Intake System Brand

in winter, Beijing re-enter the cloudy weather , watching the sky , " Huang Wu ", which can not but be a worrying inhaled each air come with some kinds of an unknown substance . As for the car engine "breathing" system, inhale clean air is also very important, in the intake system field, we have to mention a brand that is famous American K & N. Today, we are talking K & N brand.（volkswagen turbo）

K & N brands Brief History
    Speaking of the history of K & N 's , we have to turne the time to repatriate to the United States 1960 's , Ken Johnson and Norm McDonald are two motorcycle enthusiasts , and they went together to participate in a variety of motorcycle race , and took the opportunity to sell some motorcycle and other accessories . As going off-road motorcycle racing often, and want to make their own motorcycles have the best performance, they began to design and test different air filters, to help road motorcycle filter a large number of small dirt to protect the engine not to compromise, and but also to provide sufficient intake air amount , the need for a large air maintaining motorcycle engine at high speed. Moreover, this filter must be cleaned after repeated use , to save cost.
In 1969 , Ken and Norm with the first letter of their name "K" and "N" name , set up a small workshop in California 's Riverside area used to produce their own design air filter , but also opened a small shops for selling their produce spare parts , which is the first K & N companies.（opel conrods）

In 1971 , Norm McDonald , one of the founders decided to focus on their own sales and racing more like the above , then, he will own the shares of K & N 's all sold Ken Johnson, while he returned to his hometown Oklahoma Oklahoma , opened a motorcycle sales store ( this store is still operating by Norm family continue to manage ) . In the same year , K & N development process is a very important figure - Jerry Mall as a shareholder joined the company, said he is important because with him to join and his mold company and rich production and management experience in K & N 's , let K & N to more rapid development.

 After Jerry joined K & N soon, they soon have its own mechanical workshop for large-scale production of K & N products. Since then , K & N into a booming period , production design more than 2500 kinds of products.（conrods）

K & N High Performance Intake Kit proposals for change

 When many of my friends want to improve the dynamic performance of the vehicle , will first choose to replace high-performance air intake kit , this is actually not understand the dynamical system generated errors. Normal operation of the engine intake system needs , fuel supply system , ignition system , exhaust system and an ECU or carburetor work together to complete . If only high-performance intake kit does not replace other power system upgrade , it will not play out a high-performance air intake kit itself has value , so when we want to improve engine performance , you need to first think of their own needs and able to accept funding , and then select the relevant conversion kit . You also need to pay attention to one thing: Some small -displacement naturally aspirated engine models , if only to replace the high-performance intake kit not only enhance the power , and may affect the torque output at low speeds , it is because a high-performance air intake kit replaces original bellows , the back pressure effect of the intake system will be weakened. In short, the modified high-performance air intake kit , be sure to order your own needs as the starting point , and other power system upgrade , otherwise it will cause a lot of unnecessary waste.（toyota turbocharger）
● Summary（vw turbo）
    K & N at 50 years of development history, strictly control the quality of products and continue to design new products account for a large proportion , which is why it can be the best intake system manufacturer reasons. Here, we have a brief introduction about the history of the K & N intake brand and its main product lines , I hope we can have a rough understanding of them , while , in the purchase and use of K & N intake system , they can be idea.（universal turbo）