A4 B5 Avant

 Performance parts for Audi A4 B5 Avant 1.6, 1.8T, 1.9 TDI, 2.4, 2.6, 2.8 + Quattro

We offer a wide range of tuning parts for the Audi A4 B5 Avant 1.6, 1.8T, 1.9 TDI, 2.4, 2.6, 2.8 + Quattro. Most parts are plug-and-play, meaning the original part is replaced and the tuning part is reinstalled without modification or with minimal adjustment. This saves a lot of work, money, and time.

Turbocharger

The heart of the 1.8T, alongside the engine, is the turbocharger. We offer various turbocharger upgrade such as the K04-015 with a larger compressor wheel, turbine wheel, and reinforced Pressure can plug and play, because weaker turbo actuators can no longer maintain boost pressure above a certain level and begin to flutter; therefore, stronger turbo actuators are required. As a rule of thumb, starting at an opening pressure of 0.5 bar, the turbo actuator can maintain a pressure of approx. 1.3 bar, and after that, it begins to flutter. This allows for a maximum of 300 hp. The turbocharger looks almost identical to the OEM unit. We carry genuine Borgwarner as well as our own brand, “Turbo-parts.de,” which we have been successfully selling for over 13 years. These are all precision-balanced and have a long service life. To ensure the turbocharger receives sufficient exhaust gas, a correspondingly large Exhaust manifold here. Here we have again upgrade exhaust manifold with a larger pipe cross-section that can simply be swapped out for the original exhaust manifold. For conversions with universal turbochargers, e.g., GT28 turbo or GT30, etc., an exhaust manifold is required that has the appropriate T25 or T3 flange; we also carry these in our product range. If your Exhaust housing for your original turbo or upgraded turbo is cracked/defective, you can also purchase it from us.

A turbocharger alone isn’t enough. Of course, the surrounding components must also be replaced to ensure optimal performance from the engine.

Exhaust Technology

To generate as little exhaust backpressure as possible, Downpipes with a larger pipe diameter, e.g., 76 mm, are required to relieve the turbo and reduce exhaust backpressure. We also offer these with TÜV certification and with 200-cell or 100-cell sport catalytic converters.

To achieve a rich sound and ensure sufficient exhaust gas can escape, we have various Sports exhaust systems generally from Simons in Sweden with EC approval, i.e. they do not need to be registered and can be used legally on public roads.

Intake

When upgrading turbochargers or with performance-enhanced engines, the original intake hoses tend to constrict, leading to a loss of power. Here we offer silicone hoses reinforced with synthetic fibers Silicone hoses e.g. Intake hoses or boost hoses that can withstand the  power output. To achieve greater airflow, Sport air filter as well as larger intake manifolds ensure optimal ventilation. Throttle recirculation valves also known as pop-off valves or SUVs, are essential for the 1.8T; they must also be closed there, otherwise the air mass sensor will lack the air vented into the atmosphere in its calculation. For this reason, open valves are not suitable for the 1.8T with the original injection system.

Powertrain

To transfer the power to the road, Sport Clutches essential. We offer complete kits with a single-mass flywheel, pressure plate, friction disc with organic lining and release bearing that are also street-legal; sprung sintered metal discs are also suitable for the street, only unsprung ones are more recommended for motorsport.

Cooling

To get cool air into the engine, a larger Intercooler Kit or a Upgrade intercooler required, because cooler air is denser and contains more air mass, which in turn leads to more power. This is particularly noticeable in summer or during longer highway drives. For conversions with replacement turbochargers, other Oil and water lines required.

Engine Technology

To ensure the engine can withstand certain performance levels, Forged piston are installed. We’ve had good experiences with JE-Pistons and Wiseco.

upgrade turbo kits

For a complete solution, we have fully coordinated, preconfigured upgrade turbo kits which contain almost everything needed for the conversion.  

Expert assistance with your purchase

If you can’t find the right part for your vehicle in the various categories, or if you’re unsure whether a selected part can be used on your car, don’t hesitate to contact us! We’d be happy to assist you by phone at our 041014809005 and work with you to find the accessories you need for your tuning project. Outside of our business hours, you’re also welcome to send us your questions via email to the address info@turbo-parts.de . We will respond to your inquiry as soon as possible and will then be happy to process your order in our shop so that we can deliver your new product to you shortly.

By the way, under "Vehicle Search" you'll also find the right tuning parts for many other vehicle types, including, for example,  BMW, Lancia, Seat etc.