Chip tuning VW Jetta 6 + a small review of the engines of the Jetta VI
The sixth generation of VW Jetta for the Russian market is represented by several gasoline engines, below are their main advantages and disadvantages:
1) 1.4 CAXA tsi – turbocharged engine, which develops 122 hp and 200 n*m, with the shelf of maximum torque stretched from 1500 to 4000 rpm, the car pleasant and quite dynamic accelerates already from the lowest revs. Chip tuning allows increasing power by 15-20 % without decrease of resource. The Jetta with this motor is recognized as one of the most dynamic and economical cars in its class. TSI series engines can be both reliable and quite problematic, depending on the model and year of manufacture, as VAG periodically admitted deficiencies and made changes in the design of engines. In fact, 1.4 CAXA is the most reliable engine of the TSI series and Jetta should be taken exactly with this motor. With timely oil changes and fueling normal Ai-95 1.4 CAXA goes long, no problem with the piston group and turbine (minus – the chain, it serves on average 120-150 thousand km), while the draft is much better than any atmospheric engine in the C-class.
2) 1.6 CFNA – 105 horsepower and 155 N*m atmospheric engine, which VAG has cheapened out as much as possible during its creation. The same engine from the first days is installed on Polo Sedan. It is with this motor, not with the TSI 1.4 CAXA, that most malfunctions occur. The most common inherent defect in the 1.6 CFNA is a knock on a cold engine, which on some engines turns into a knock on a hot engine and leads to subsequent engine repairs or replacements. The knock is caused by the piston skirt being too short, causing the piston to shift. This problem is temporarily corrected by warranty free replacement of pistons with upgraded ones. Also to the disadvantages of this engine are rollers of Chinese-Turkish origin, which on many engines need to be replaced at mileage of 30-60 thousand km, as well as the pump, which also has a small life due to the cheap components. 1.6 CFNA is designed for a minimum of AI-95, and preferably AI-98. Due to the miserable construction of the exhaust and cheaper construction of the engine, timing chain drive (the chain lasts on average 120-150 thousand km.) engine is running loud, especially it is noticeable after 3 thousand revolutions. Despite a lot of shortcomings, with timely and correct maintenance this engine has a resource of at least 200 thousand km. The 85 hp version of the engine is called CFNB and differs from CFNA only by the firmware, and thanks to the chip tuning all power limitations are easily removed.
The advantage of this engine – in the secondary market, due to the good reputation of the atmospheric engines VAG previous generations, the Jetta with an engine 1.6 CFNA more liquid than the engine series TSI.
3) 1.6 CLRA – The same as CFNA, only the engine block is not aluminum, but cast iron. This engine does not have a cold knock (piston shift). It was installed on Mexican-built Jettas.
4) TSI 1.4 150 hp twin turbo – Powerful and economical engine, whose reliability depends mainly on operation and maintenance. After dealer oil change intervals (every 15,000 km) this engine often comes to an end. Piston failure and compression drop are the main consequences of improper maintenance. The engine runs long enough if the oil (not fake!) is changed every 7-7.5 thousand km and with AI-98 gasoline. Low chain life is a defect in most VAG engines.
Since 2015, new generation atmospheric and turbocharged engines started to be installed on the Jetta. The new engines have a belt instead of a chain in the timing belt drive, improved engine cooling and heating, in general the engines are quieter. The atmospheric engines (110 and 90 hp) have a phase shifter on the intake shaft. Disadvantages of the new engines are still widely unknown, the atmospheric engine has noted cases of increased oil consumption, but within the tolerance of up to 1 liter per 1,000 km.
As for transmissions: – Atmospheric engines have either 5 steps mechanics, or with a reliable automatic Aisin – Tsi engines are paired with 6 steps mechanics, or a DSG robot with a dry clutch. Clutch needs to be replaced, depending on driving style and operating conditions, every 60-120,000 km on average. The DSG is significantly more reliable than Ford’s PowerShift robot. There is a 5-year warranty on the Jett’s DSG until 2013. That is, you can now buy a car from ’13, until the end of 2018 to replace the clutch for free (and possibly the mechatronic itself, if you agree) and quietly drive a couple of years, enjoy the dynamics and quick shifting speeds.
Now back to the chip tuning of our client’s Jetta 
It is a “Mexican” with 1.6 CLRA engine. In addition to increasing the power it was necessary to turn off the remote catalytic converter. As a tuning used certified firmware from ADACT on the basis of the latest factory update + in the firmware slightly increased the idle speed, now the oil pressure is slightly higher + the engine runs smoother and more even.
Thanks to chip tuning eliminated pause at full throttle, from low revs increased torque, with a quiet driving style a little should decrease fuel consumption.
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Types of engines Volkswagen Jetta
Compared with past generations of cars, modern models are equipped with mostly standard variants of power units.
Therefore, in order to assess the engine of each of the modifications that are offered for the model Volkswagen Jetta, below we offer a detailed description and a number of technical specifications.
When there is a choice of Volkswagen Jetta car, the initial question is always considered what engine is better to take. In the latest model lines presented, the Jetta car is available for purchase with 4 different engine options.
The proposed types of engines can be combined with automatic transmission, “robot” and the classic “manual”.
VW Jetta 1.6 liter engine
One of the four options is a non-turbocharged German “engine”, which has a working chamber volume of 1.6 liters, presented in the Volkswagen Jetta in the form of two modifications.
- The first of them has a capacity of 85 hp and a fixed figure of 145 Nm of torque at 3.8 thousand revolutions of the engine Volkswagen Jetta.
When you reach a speed of 5.2 thousand revolutions per minute, the power unit reaches the top indicator of its power. Up to the proverbial 100 km/h, it will be possible to accelerate the Volkswagen Jetta in 13 seconds.
When choosing this Volkswagen Jetta powertrain, the owner will get it in combination with a manual transmission, i.e. with a manual.
- The second modification (the volume is exactly the same) can boast already 105 hp, and even additionally distributed injection.
At 5.25 thousand rpm the power limit of the Volkswagen Jetta power plant is reached.
Although this variant of the engine also does not have an additionally installed turbocharger in its configuration. When equipped with manual transmission engine, disperse the Volkswagen Jetta to 100 km / h will be 11.5 seconds, when equipped with “automatic”, this speed is achieved in 12.5 seconds, but the maximum is fixed at 180 km / h.
Engine VW Jetta Jetta 1.4 liters
Usually the engines on the Jetta, including the engine Jetta 1.4 – gasoline. Just like the motors described above, the engine, whose working volume of 1.4 liters, is represented by two variants:
1. turbocharged, 122-horsepower engine with in-camera injection, working on TSI technology.
At 5.0 thousand rpm, the engine power parameters reach the maximum value. At 1.5-4.0 thousand rpm, a torque of 200 Nm is reached.
The engine can be completed with a manual or robotized transmission. This option Volkswagen Jetta will reach 100 km / h noticeably faster than the previous two, it needs for this purpose only 9.8 seconds. The travel speed that this configuration provides is 202 km/h.
2. The biggest power, 150 hp, has an engine, the volume of which is also 1.4 liters, but it is equipped with a system of direct injection into the combustion chamber, and also has an additionally installed turbine.
Works this power unit on technology TSI, in which the engine has intercooled air. This configuration option has the best dynamics of all the options presented above.
Power of 150 hp will be achieved at 5.8 thousand rpm, and torque figure of 240 Nm is reached at 1.5-4.0 thousand rpm. Volkswagen Jetta motor is equipped with a robotized transmission. Despite the rather modest engine volume, the Jetta starts up to a hundred in 8.6 seconds, and its top speed is 215 km/h.
Why is there such a difference in power between the two engine variants of the Jetta 1.4?
The fact is that the 122 horsepower motor has only one turbocharger, and the 150 horsepower motor has a twincharger. That’s what makes the engines have different power, but otherwise they’re pretty much the same.
In any case, regardless of what volume of the engine was chosen to complete the model Volkswagen Jetta, it turns out quite economical unit, the power of which will delight even the most sophisticated motorist.
Additional equipment in the form of crankcase protection is also considered one of the important points, because it is the basis for the safety of car equipment. Below we will consider how you can install protection on your own forces on the car Volkswagen.
Number on the engine of the VW Jetta
Each power unit with which the vehicle is equipped has its own identification number. It consists of the original letter combination and a number part, which is the serial number of the engine. This engine number is located on the left side at the junction of the engine compartment and the transmission of the Volkswagen Jetta. Once again, this identification number and letter designation is duplicated on the cylinder head.
On cars manufactured by Volkswagen, it is very common to see the VIN – number on the body of the timing belt. In this case, the number is applied in the form of a sticker. It also has a letter designation and VIN – number. Alphabetic part, which the number contains, is additionally on the nameplate.
Typically, this number consists of 9 characters – the original combination of letters and numbers. The first part is an alphabetical designation of the power unit, and the second part, consisting of six characters, is the serial number. After the number of engines produced exceeds 999,999 with the same designation in the alphabetic component, each number now has another letter instead of the first digit. As a result, it turns out that each power unit has its own unique number, which can be used to determine where and when it was manufactured.
Jetta engine protection and installation
In order for the Volkswagen Jetta car to serve a long and faithful service, it is necessary to take care of the integrity and safety of its main working units and assemblies. Most car owners consider a prerequisite for the safe operation of the vehicle is to install engine protection. It will avoid mechanical damage or ordinary bumps, which are not uncommon on the roads.
Today, the road surface, which is in average cities, is far from perfect, so the engine protection, installed on the Volkswagen Jetta, will reliably save the most important parts of the power equipment from serious damage and, as a consequence, costly repairs.
It is no secret that most manufacturers, in order to save money, do not bother to install protection on the engine. Therefore, car owners have to deal with this issue on their own.
To independently install a crankcase protection on the Volkswagen Jetta, you will need a minimum of tools and time, but the result will give maximum safety to the technical units of the car. So, to replace or to install protection on a Volkswagen car, you will need a wrench with sockets, the protection itself, bought at an authorized dealer or at any auto store.
The main thing to pay attention to the fact that the protection for the model Volkswagen Jetta should be made of steel, titanium or aluminum. Of this list, the steel version is considered the safest and most reliable. In this case, the car owner receives a 2 mm plate made of high-grade metal, with a total weight of 8-12 kg. For not particularly high Volkswagen Jetta car such protection – the ideal option, as it is sufficiently rigid, but at the same time easily amenable to any modifications or straightening.
According to the existing schedule of works, every 3-4 years the engine protection requires scheduled replacement. To perform this work yourself, you need to perform a few simple operations:
- If there is a factory protection, it must be removed by unscrewing the bolts;
- The new protection is attached in place of the original one;
- Screw in the perimeter of the same bolts.
Thus, the whole process of independent installation took about 15-20 minutes. Now the Volkswagen Jetta is not afraid of hitting the bottom, as there is a reliable protection for the crankcase.
