Help you to see the error of opel tech2 modification

Mentioned the power part of the  opel tech2  alteration, modification of the engine intake system is usually referred to the specified action (the most common basis for retrofit projects). Intake, the exhaust system is a complementary relationship, want to improve the output performance of the engine need more co-ordination of the intake system. As a four-stroke engine work is done the first part of the air intake, compared to the mysteries of one of the exhaust system is more complex, Current modified Mistakes series we are concerned that the intake system modified.
 Last modified in the the misunderstanding series of articles, we detail the modification of the exhaust system. First article as a dynamic system modified exhaust system modification misunderstanding "does not mean that no exhaust system intake system performance power output, but take into account the current power system in the country, involving modification, alteration The exhaust system is the most common, and you really want to improve the dynamic performance of the engine intake system also plays an important role. Let us start from the modified intake system of misunderstanding and talk about the modified intake system.
    Mentioned the power part of the alteration, modification of the engine intake system is usually referred to the specified action (the most common basis for retrofit projects). Intake, the exhaust system is a complementary relationship, want to improve the output performance of the engine need more co-ordination of the intake system. As a four-stroke engine work is done the first part of the air intake, compared to the mysteries of one of the exhaust system is more complex, Current modified Mistakes series we are concerned that the intake system modified.
Relating to the safety of life to help you see the brake conversion errors■ intake system modification Myth # 1: into the air the bigger the better

    First of all, we have to recognize that the depot spends tens of millions or even billions of costs used to develop the car, create product performance is not without reason. For the power system is the core part of the vehicle is to weigh the various factors in the final choice of one of the most reasonable and balanced set. Anyway, the modification is to break down the factory has set a good balance, and to make some compromises and concessions on the durability, comfort and environmental conditions, the dynamic performance is more prominent. The dynamic lift moderate improve the efficiency of the air intake of the engine can be modified intake system effect (generally not more than 10%), but is also not difficult to operate, if they wish to further improve the power on this basis performance, things get complicated.

    The intake air quantity can be increased within a unit time with more fuel to combust acting (ECU will detect the increase in the intake air, and to increase fuel with the combustion in real time). Simply put, provide the fuel and the combustion gas engine more and greater pressure on the piston, the higher the torque provided by the engine. Factory ECU fuel injection, ignition and other settings range limit (taking into OPEL TECH2 USB account a variety of factors, the adjustment range is very limited), once into the air beyond the scope of the original set, the rest of the engine running will not continue follow-up adjustments, so only part of the air intake modification ECU, fuel supply, ignition, exhaust and other is not synchronized follow-up, they can not be significantly improved dynamic performance.

  The other hand, increasing the intake air quantity is almost as much as possible to reduce intake resistance, for some of the smaller displacement models, low speed when the engine can provide an intake negative pressure (sucking force), same speed too smooth intake intake airflow will reduce speed, low intake resistance will weaken the low-speed torque output accelerated become insolvent (even unstable idle, so its infancy, abnormal jitter), this feature more not suitable for urban road vehicles, modified intake to take into account the characteristics of the power output of the model itself, the intake system may not be too smooth for some of the the low torsional poor models.

  For Liezi Suppose we use a straw to drink plenty of water with a ordinary thickness straw can effortlessly water sucked out, but if replaced by a super-rough (Zuizhang to just latch onto) straw, think drink water almost impossible, but this super thick straw, then to the elephant would be very appropriate, and high engine speed when the sucking force is like an elephant, low speed like people.■ intake system modified Mistakes 2: random change secondary intake, electronic turbine products do not fly
  Modified products of these so-called friends must pay attention to the car home articles on electronic turbine, converted the second intake of these two terms is no stranger before the car Channel Mythbusters series has been popular on the recent market enhance dynamic performance detailed test results clearly illustrates the problem. These modified products will not only fail to improve the dynamic performance of the engine, the dynamic numerical test after horsepower machine but lower than the original state, so the modification of these do not fly products also cause unnecessary damage the engine, not worth the candle.● modified secondary intake
 The so-called secondary intake modification works on the intake process changes slightly. This device is mounted on the throttle after the vacuum tube, that is that will lead to the crankcase (PCV valve) tubes cut open in the middle of a three-way valve, so that the engine vacuum suction on not only the exhaust gas of the crankcase also directly sucked from the outside additional air to supplement to the intake manifold. But because of the crankcase ventilation tube in position in the throttle after the additional air will not be included in the air flow sensor, so the injector system does not correspond to automatically adjust the amount of fuel injection.Crankcase ventilation fundamental purpose is to design proportion consumed the crankcase exhaust gas to be environmentally friendly, so the crankcase into the gas are given based on overall engine tuning good. If the installation of the second intake valve surface, increase the feed rate, but in fact, reduce the concentration of oil and gas mixture, combustion full original design, that white is the vacuum tube leak.
 The test results show that the modified lower maximum power of 5 kilowatts! Power is reduced, and the car's speed decreases. Not only that, after changing the original concentration of the mixture (fuel injection quantity unchanged into the air to increase the air-fuel ratio increased), also increased combustion chamber temperatures, this modification is not only unable to improve the performance of the power, so long bound to the engine causing unnecessary injury.
● modified electronic turbine
 Compared to the second intake modifications, opel tech2 diagnotic tool electronic turbine seems to be more reasonable, because before the installation position in the throttle to increase the intake volume will change the air flow sensor data read, ECU injector action accordingly adjust the sounds be power output be helpful, but the actual This modification is extremely wrong.

 Electronic turbo rely on battery 12V DC rotates, although we do not have a device to test the actual speed of the electronic turbine, but think about it a little mindless, a 12V power driven DC motor speed can I Chengsi also over 6000 rpm, right? Turn up the sound and the CPU fan above is not much difference.

    Moreover, electronic turbine fan is constant speed, we all know, is different in the different speed of the engine demand for the intake air amount, the higher the speed the greater the intake air quantity per unit time, even at low speed electronic be able to increase the engine intake air turbine, but as the speed increases, the plastic electronic turbine blades not only can not help the engine to improve the efficiency of the air intake, has become a burden on the actual test results is also very good attention to point plus The electronic turbine installed maximum power of 8.7 kW lower than the original speed slower than the original 11.4 km / h.
■ intake system modification misunderstanding 3: chaos mushroom head, feel free to change the intake manifold
 Mounted in the the windbox air filter (air filter) whose role is to block the dust, you can avoid the dust and foreign matter from entering the engine to cause damage, but will also form intake resistance. Some owners modified intake will be modified mushroom head (look like mushrooms, so called mushroom head), air filter and change the original intake manifold. The mushroom head type air filter with a circular or a spherical filter layer design, and increase the intake area can increase the intake air amount (provided that the engine can provide sufficient sucking force). But the quality of the modified air filter currently sold on the domestic market is not flattered by the cottage, no-name products plethora listen businesses touted use inferior products, is likely to make the engine inhaled dust, failure is an inevitable result of.