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Prikazuju se postovi od siječanj, 2018

What's a Two-Step Rev Limiter, And How Does it Help in Drag Racing?

If you've watched any form of drag racing where turbochargers are involved, you've heard talk of two different types of engine equipment: two-step rev limiters, and anti-lag. Both are responsible for some massive exhaust flames erupting from a car that's revving at the starting line. But what's the difference between the two? How do they work? And what do they do to help your racing launch and drag strip ET? As always, Jason Fenske of YouTube's Engineering Explained is here to demystify the technology that helps racers win. With his trusty whiteboard illustrations, Fenske helps us understand the difference between a two-step rev limiter, anti-lag, and the launch control systems that some manufacturers now include from the factory on their high-performance cars. Basically, it all boils down to ignition control. An aftermarket two-step rev limiter lets you set one (lower) limiter for launch, and a higher limit for when you're upshifting as you accelerate awa

This Is How An Automatic Transmission Works

Ever wonder how your transmission knows to shift gears? Why is it that when you stop, the engine doesn't die? We're here to show you how cars work. We recently looked at manual transmissions. This week it's regular ol' slushbox time. Automatic transmissions – they're pretty much black magic. The sheer number of moving parts makes them very difficult to comprehend. Let's simplify it a bit to get a basic understanding of how it all works in a traditional, torque converter-based system. Your engine connects to your transmission at a place called a bell housing. The bell housing contains a torque converter for automatic transmission-equipped vehicles as opposed to a clutch on manual vehicles. The torque converter is a fluid coupling whose job it is to connect your engine to your transmission and thus to your driven wheels. The transmission contains planetary gearsets which are in charge of providing different gear ratios. To get a good understanding of how the

Unique Finish: Golf 4 GTi Detailing

11 year old Golf 4 GTi gets a 3 day detailing including Paint Correction and Interior Detailing. https://www.youtube.com/watch?v=qQ6oOW0Dxo0

Best of Vw Golf 4 r32 Tuning

VW Golf 4 R32 Tuning Compilation.Golf 4 R32 best wheels and tuning parts ! Golf 4 R32 OEM,Golf 4 R32 Custom https://www.youtube.com/watch?v=2ye92cVi1VU

Here's Exactly How Much Difference a Turbo Blanket Makes

On modified turbocharged cars, you often see the turbo wrapped with a curious piece of flexible metal-like material. This sleeve is called a turbo blanket, and it could save your engine bay from a lot of damage. Turbochargers generate a lot of heat, but a blanket keeps the heat contained, preventing it from spreading throughout the engine bay and hastening the aging of vital plastic or rubber components. Because the temperatures get so hot, turbo blankets are made from a combination of heat-resistant fabrics, flexible metal, and in some cases, volcanic lava rock.Now, most factory-turbocharged cars can get by without a blanket—they aren't using the turbo enough to generate a significant amount of heat, and they were designed to cope with the thermal output of the turbo when used under factory parameters. But when people start to push 30 lbs. of boost through an aftermarket turbo setup, high temps becomes a real issue.Rob Dahm, a popular automotive YouTuber, had this problem. 

How to Know If Your Turbos Are Going Bad

A turbocharger is a compressor that is mounted on the exhaust side of a vehicle and is intended to dramatically increase the horsepower of the engine. As the engine's rpm increases, the turbocharger forces air into the engine in order to increase the power. This is known as forced induction. If a turbocharged engine is not maintained properly, the turbo may fail, leading to a costly repair bill. There are several symptoms of a bad turbo, though not all of them are caused by a just a bad turbo. Test drive the vehicle and see how the power delivery is responding. A car that has a bad turbo or turbos will still run, but it will not produce the same amount of power that it does when the turbos are working the way they should. If the car's engine is producing much less power than it did before and accelerating slower, but still running, the turbos may be failing. Look for a "Check Engine Light" on the dash. In a modern turbocharged car with sophisticated onboard diagno

Symptoms of a Bad EGR Valve

The same symptoms that indicate a bad EGR valve can also indicate problems in other parts of the         EGR valve passages plugged with carbon deposits.  system. For instance, you can confuse engine performance problems stemming from a bad EGR valve with problems caused by failures in the spark plugs, the spark plug wires, the fuel filter, the fuel pump regulator, and various engine sensors. So, if you don’t do your troubleshooting, you may end up replacing parts unnecessarily and wasting time and money. To recognize the potential signs of a failing EGR valve, it helps to know a little about an EGR valve: what it does, what it might look like, and how it works inside the combustion chambers or cylinders. If you're already familiar with the EGR system, jump to the section below on “Symptoms of a Bad EGR Valve.” Table of Contents I. What the EGR Valve Does II. Types of EGR Valves III. How the EGR Processes Exhaust Gases IV. Symptoms of a Bad EGR Valve V. Troubleshoot

Story of Duda's e30

This is a story about a car that was assembled by 4 guys at the backyard, but against the hard and long work they could enjoy it for about 4 minutes check it out to see what's going on.   Assembled : Norbert Dudas, Balint Szanto, Balazs Karasz, Balint Kiss Camera / edit: Balint Kiss  https://www.youtube.com/watch?v=QtT4JN9uZeg

Check this video what he did to his Golf 4 GTI 1.8t

Check this video what he did to his Golf 4 GTI 1.8t class="separator" style="clear: both; text-align: center;"> https://www.youtube.com/watch?v=MVFHJO7AVQ0

Top 6 ugliest cars ever built

The search for the ugliest car of all time can take you into realms you would never expect, including culture, engineering and art. There is mystery, too: what can explain the thinking of the designers who created an apparition like the Chevy Lumina van? Nevermind. Ugly as it may be, the Lumina didn't make the cut when Globe Drive's Aesthetics Panel sat down to create a list of the 10 ugliest cars of all time. There were dozens of potential candidates. I voted for the Bond Bug – a horrible English three-wheeler that resembled a cheap hot tub that had been fitted with a windshield and headlights. Several others listed the Dodge PT Cruiser – it came close, but missed the top 10. We considered the Ford Edsel, Plymouth Prowler, and many more. Like all art, automotive design is subjective. There are no hard and fast rules to categorically declare a car ugly. But as U.S. Supreme Court Justice Potter Stewart said in his ruling on obscenity: "I know it when I see it."

How Manual Transmissions Work

If you drive a stick-shift car, then you may have several questions floating in your head. How does the funny "H" pattern that I'm moving this shift knob through have any relation to the gears inside the transmission? What moves inside the transmission when I move the shifter? When I mess up and hear that horrible grinding sound, what is actually grinding? What would happen if I accidentally shift into reverse while I'm speeding down the freeway? Would the whole transmission explode? In this article, we will answer all of these questions and more as we explore the interior of manual transmission. Cars need transmissions because of the physics of the gasoline engine. First, any engine has a redline - a maximum rpm value above which the engine can not go without exploding. Second, engines have narrow rpm ranges where horsepower and torque are at their maximum. For example, an engine could produce its maximum horsepower at 5,500 rpm. The transmission allows the ge

How Sequential Gearboxes Work

If you have ever ridden a motorcycle, you know that the manual transmission in a motorcycle is nothing like this. On a motorcycle, you shift gears by clicking a lever up or down with your toe. It's a much faster way to shift. This type of transmission is called a sequential gearbox or a sequential manual transmission. It turns out that most race cars use sequential gearboxes as well. A sequential gearbox gives the driver several important advantages that are very useful in a race car. We will discuss these benefits later in this article. In this article, you will learn how a sequential manual transmission works and why this type of transmission now appears on so many high-performance vehicles. The "H" pattern allows you to move the shift rod between the control rods for the three forks and move the rods back and forth. A sequential manual transmission works the same way. There is still a set of gear selector forks that move collars that engage gears. The only diffe

What Does Golf GTI Stand For?

No doubt that you have heard of the Volkswagen Golf GTI, but do you know what the GTI stands for? The automotive industry likes using acronyms to describe the various models whether it relates to its intent, its design or any other reason that could be behind it. In the case of the Golf GTI, the GTI acronym signifies something to do with its performance aspect. The GTI usually stands for something like Grand Touring Injection, Gran Turismo Iniezione or some other variation of that term. In the end, it is used to signify the inclusion of a fuel injection system. The GTI acronym, in the past, has been used to signify a grand tourer or Gran Turismo sports car that had fuel injection. The Golf GTI name reinforces the Golf GTI's sporty engine and performance features as well as its premium and performance driven design. Benefits of a Fuel Injection System Fuel injection systems are becoming more popular for those who want the best performance from their engines. The main benefits o

How Twin-clutch Transmission Works (DSG)

The dual-clutch transmission, also known as the Direct Shift Gearbox (DSG) or twin-clutch transmission, is an automated transmission that can change gears faster than any other geared transmission. Dual clutch transmissions deliver more power and better control than conventional automatic transmission and faster performance than manual transmission. Originally marketed by Volkswagen as the DSG and Audi as the S-Tronic, dual-clutch transmissions are now offered by several automakers, including Ford, Mitsubishi, Smart, Hyundai and Porsche. DRIVING A CAR WITH A TWIN-CLUTCH / DSG TRANSMISSION. Twin-clutch equipped cars do not have a clutch pedal; the clutch is engaged and disengaged automatically. The twin-clutch transmissions bridge uses an automatic-style shift selector with a traditional P-R-N-D or P-R-N-D-S (Sport) shift pattern. In "Drive" or "Sport" mode, the dual-clutch transmission operates as a regular automatic. In "Drive" mode, the transmission

Chip Tuning

Chip tuning refers to changing or modifying an erasable programmable read-only memory chip in an automobile's or other vehicle's electronic control unit (ECU) to achieve superior performance, whether it be more power, cleaner emissions, or better fuel efficiency. Engine manufacturers generally use a conservative electronic control unit map to allow for individual engine variations as well as unrequent service and poor-quality fuel. Vehicles with a remapted electronic control unit may be more sensitive to fuel quality and service schedules. This was done with early engine computers in the 1980s and 1990s. Today, the term chip tuning can be misleading, as people will often use it to describe ECU tuning that does not involve swapping the chip. Modern electronic control units can be tuned by simply updating their software through a standard interface, such as On Board Diagnostics. This procedure is commonly referred to as a motor or electronic control unit tuning. Electronic cont

How Air Bag Suspension Works

Identification As versatile and convenient as cars are, it's easy to overlook the small built-in comforts they provide, such as smooth riding. If it was not for suspension systems, our travels would definitely be a bit more bumpy. Air bag suspension is an improvement over the traditional systems; However, the basic design for air suspension only replaces the parts used in the older design. A traditional suspension system involves steel springs and shock absorbers. The mechanism itself is made up of a coil, or a leaf spring, which contains a piston. As the pistons move up and down, the gas or liquid contained in the chamber works to buffer the impact of the piston. This is the shock absorber mechanism at work. The spring and piston move together in each wheel position to absorb the shock whenever the car rolls over a bump. Since the coil springs are designed to resist compression, they further enhance the effect of the shock absorber. Air bag suspension takes this enhanced effect

Mods To Do On Golf 4 1.8T

The order of these mods is recommended, although everyone decides to go down their own path. 1. Maintenance before modding - This includes changing fluids, spark plugs, filters, timing belt, Making sure your brakes work etc ... Some cars may need more maintenance than others, but It's never a good idea to start a modding a car that has not been properly maintained. 2. Catch Can -   A catch can be a great preventative mod that will reduce the amount of carbon build up in your engine. Our PCV systems are a known problem, and carbon buildup becomes a big one issue that reduces power in our cars. Although a catch can not completely fix the issue, it will definitely help. Pairing one with the occasional sea-foaming will help keep your valves clean and carbon free. 3. Downpipe (DP) - The reasons I put these two categories together is because they are go hand in hand. I will explain each one individually later on. The stock DP on the mkiv 1.8t is very restrict