Mazda 3 explodes to MPS 2.3T(BL)

In the case of slow traffic, the low twist of 2.3 displacement is really good, and it can even be used as an "automatic" car after upgrading to the fourth gear. Red light and green light, stop and go, clutch weight is acceptable. I wonder if the car factory did it on purpose. The feeling of clutch foot always seems to induce the driver to eject and start, and lift the clutch in place with one foot. At this time, the semi-linkage depth is just enough for the tires to scream and tear the ground. It is necessary to hold back and compete with the clutch that leads people to "do evil" when they are idle. If you can't get used to the negative pressure position of the LCD booster meter in the middle of the instrument panel, then kick the throttle to the end in any gear, and the turbine will start boosting in a very short time, and the total pressure can reach 0.9Bar around 2200 rpm. However, the feeling of pushing back should be accumulated to about 4000 rpm from the full opening of the turbine to reach the strongest. Compressed air will be transformed into a powerful force to instantly push the engine to the red zone of 6700 rpm, and the dynamic characteristics of the turbine car will be fully displayed. When you step on the clutch pedal and send the compact gear handle to the next gear, the rebound force of the clutch will bounce off the left foot, which is even more urgent than the author. This kind of fast shift technology, as long as the law of engine speed decline is mastered, the ride comfort does not lose the double clutch at all, but the shift speed is not as good as that of machinery. Speaking of shame, this Mazda MPS is the most powerful manual forerunner I have ever driven in China.

Photo: This car is easy to hide in the crowd. Although it is a Japanese car factory, the characteristics of MPS are more European.

In particular, the turbine hysteresis is tested with the optimal torque belt speed of about 4500 rpm in the third gear, and the throttle is completely released and then fully throttled (Turbo? It is found that the engine is in the same state as the naturally aspirated engine for about half a second, and the turbine has not started to intervene in this half a second. But this does not mean that this has any defects in the engine. As long as it is a turbocharged engine, turbo lag is bound to exist. After loosening the oil, the turbine does not work, and there is no pressure at the air inlet. After full throttle, the turbine starts to work, then the pressurized air is filled into the intake pipe, intercooler and intake manifold, and finally becomes the power to do work. It is ideal to complete these steps in half a second. If the intercooler is replaced by a longer front intercooler or a larger intercooler, the turbo lag will only get worse. Why can't the automatic turbo charger detect the turbo lag? It is believed that the forced downshift of the gearbox contributes to the jet lag.

Figure: The overhead intercooler has also been transplanted, and its reactivity is better than that of the previous intercooler. Of course, the cooling efficiency will be discounted.

Figure: Propelling a TD04-sized turbine with a displacement of 2.3, its balance is unmatched by the external turbine kit.

Figure: The turbine is located between the firewall and the engine block.

Figure: MPS's complete instrument is transplanted, so you can see the turbocharger numerical table hidden in the center of the dashboard in a low-key way. Personally, I still think it is cooler to have an external connector.

Photo: This sticker is obviously used to paralyze the enemy.

Although the engines of the two generations of MPS are basically the same, due to the different tendency of ECU setting, it feels that the first generation of MPS3 is more violent than the second generation, and the second generation is more like a European steel gun with softer power output. Such changes can be seen everywhere. For example, Subaru impreza STI 9 generation contrast 10 generation, EVO 9 generation contrast 10 generation, all the once unruly prodigals have to yield. Of course, it is always the market, not the designer, that determines the demand. In recent years, Mazda has played down Zoom-Zoom, mainly promoting SkyACTIV blue sky innovation technology. The MPS camp can be retained, the power is not discounted, and it is enough to stick to the manual gear. Of course, as a modified model, there are still some minor changes in the design of MPS engine. Second generation MZR? DISI engine adds a dish near the spark plug, which can optimize the oil mist of the direct injection nozzle in the cylinder, make it more concentrated near the spark plug and improve the fuel combustion efficiency. It's really small. Besides, there is almost no difference between the two versions of MPS engine. Of course, the second-hand price of the second-generation engine in the updated year will be higher than that of the first generation, and the difference between the second-hand prices is about 654.38+0 million yuan. From the point of view of original reduction, it is meaningful to match which frame with which engine.

Figure: From the appearance, there is no Mazda factory logo on the cold decorative cover of the first generation MPS engine.

The gearbox is also such a feature. The transmission ratio of BK series gearbox is more dense than that of BL series gearbox. BK MPS needs to shift gears more frequently, and the tachometer scans back and forth, which can stimulate the driver's adrenaline more or less, but the power will be interrupted during the shift. Sparse transmission ratio is actually more suitable for engines with flat maximum torque output and high horsepower. The transmission ratio of BL series gearbox is wider, 1 gear 3.2 14, gear 2 1.9 13, gear 3 1.366, gear 4 1.025 and gear 5 0.798. In this way, each gear covers a larger speed range, which means that the transmission ratio is "sparse". Driving BK in this way, especially in the first three gears, and lengthening the transmission ratio can reduce this violent front-wheel drive slip to some extent. There are also quite a few BK MPS owners abroad who have changed the first and second gears of BL to reduce the power loss caused by slipping when the first two gears start at full throttle.

Figure: In the performance car, the gear feel of MPS is still relatively friendly.

Figure: The whole gear shifting mechanism and gear seat are replaced together, and there will be no matching problems such as soapy.

When the engine compartment is opened, the MPS engine code L3K9 is basically maintained in the state before packing in Japan. The last hot-blooded car owner (the car was demolished and sold) was not hot-blooded? ) changed the heart of the car to blood red? "Arterial blood vessel" is an intercooler inlet/outlet pipe kit directly modified by Mazda brand AutoExe. The kit includes a reinforced silicone hose connected from the turbine to the intercooler, which can reduce the pressure loss caused by the expansion of the hose when the turbine suddenly supercharges; There is also a cast air outlet pipe, which optimizes the shape of the inner cavity of the pipe, improves the smoothness of the air flow at the outlet of the intercooler, and enables the air flow to flow to the throttle valve more smoothly, thus accelerating the response speed of the engine and better adapting to the subsequent supercharging value. Whether the effect of this modified kit is so immediate or not, at least the bright red painting adds a lot of highlights to the engine compartment. It would be more perfect if you could buy the AutoExe cooling kit produced by ARC. The other is the basic air intake and exhaust modification, replacing the mushroom head air intake kit of HKS and the mid-tail exhaust system tailored by RES.

Figure: The cold inlet silicone hose is composed of four layers of silicone fibers, which can prevent the hose from expanding and losing pressure when it is suddenly pressurized.

Figure: Bright red painting is the symbol of AutoExe. Is it reminiscent of the EJ207 of Subaru STI, with an intercooled red aluminum alloy intake pipe on it?

Figure: From the intercooler to the throttle, the intake pipe must turn 90 and then turn 180. The original intake pipe is not conducive to the smooth intake. AutoExe optimizes this defect through the design of unequal inner diameter.

Photo: HKS mushroom head air intake kit.

Figure: Tail section of tail gas customized by RES.

Just like Dongben Civic FA 1 changed to Type? R, the best way to transplant MPS is to find an integrated MPS front in overseas markets, so that the engine, engine foot, intercooler kit, computer, transmission shaft, claw, swing arm, subframe and even brake system can be included. So in order to complete the transplant, I specially bought a cut head from Japan for the protagonist of this article and put everything I can on it. However, unlike the transplanted K20A, both the engine foot and gearbox foot of MPS can correspond to the original foot of Mazda 3, and there is no need to copy the engine foot. However, this does not mean that porting MPS engine is a simple matter. After the engine is transplanted, peripheral components need to be replaced together, such as MPS transmission half shaft, MPS front horn, MPS original computer, etc. The most troublesome thing is to match the ECU line group. The original MZR2.0 of this Mazda 3 was replaced as a whole with a six-front-speed manual gearbox connected by a gearbox half shaft and a claw assembly. By the way, such a complete 2.0 six-speed manual power system, due to the universality of platform production, happens to be a complete set of components transplanted to all Mazda 1.4 and 1.6 models, such as Carnival or Mazda 3. That's it. Mazda 3 uses MPS engine, and the next power system can just make Mazda owners of 1.4 or 1.6 want to taste the manual taste of 2.0, with six front speeds.

Figure: Both engines are MZR series, and the engine feet are universal. Of course, because the L3K9 of MPS is heavier and its output is stronger, the engine foot force is also greater.

Figure: The position of the engine foot connected with the subframe is the same as that of the first generation, but the connection mode and shape with the engine body are different.

Figure: The transmission shaft of MPS is not only thicker in diameter, but also has three more spline teeth at the wheel end than the ordinary version, which means it can bear more torque.

Figure: Due to the mating problem of the spline at the wheel end of the transmission shaft, the typical action of MPS transplantation is to replace the MPS claw and hang the lower arm.

In order to restore it more vividly, the owner kept some appearance parts in his car. For example, one of the exclusive MPS is a perforated hood used to cool the overhead intercooler, and the store specially processed a deflector on the back of the hood to ensure that the air can be directly blown to the intercooler after entering through the hood hole to help cool the high-pressure air. The spoiler at the rear of the car is also the original style of MPS, which makes the outline of the rear of the car more dynamic. In addition, there is the original MPS shell-shaped crystal rear headlight group, which is more refreshing than the usual red taillights. Does the rim look familiar? Although the host didn't choose MPS? 3 Japanese BBS OEM rim, but Mazda also loyally chose the original five-spoke rim of RX-8 predecessor. Painting it matte black weakens the three-dimensional effect of this rim, probably because the rim was not satisfied with the color when it was bought back. Just repaint it.

Figure: MPS style perforated hood.

Figure: A deflector is modified on the back to let the air blow to the intercooler more directly.

Photo: The rim shape of Mazda RX-8 is versatile, and the rim ET and the body are just right. It is reasonable for MPS to use the same 225/40R 18 tires as the original RX-8, if it is not strenuous driving.

Photo: MPS crystal diamond lamp group.

Figure: The tail wing also adopts MPS style, which improves the reduction degree of the whole vehicle.

If you stop more steadily, you can feel more at ease. There is also the MPS braking system mentioned before, which also has its own cutting head, so it has become the mainstream of the car. Especially after a round of test run, the original braking system of Mazda 3 was fatigued after many times of high-speed braking and deceleration. The author will immediately start the modification of the braking system after the test run. It turns out that the braking system of Mazda 3 is the same as that of Fox, with a diameter of 280mm and poor calipers. The braking system of MPS is borrowed from Volvo on C 1 platform. Results The diameter of MPS disc is 40 mm larger than that of 320mm, and the caliper made by FoMoCo completely exceeds the original caliper of Mazda 3.

Photo: By the time of shooting, the car was still using the original braking system, which was not enough. Fortunately, at night, m? The racing car replaced the original MPS braking system of this car.

Photo: 320mm diameter brake discs, bigger calipers and bigger brake pads. This braking system can be described as a product of Mazda 3/5 cars, but the number is scarce.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.