What is a so-called turbo knee?

de Deutsch

Tuning Turboknie Turbo Elbow Turboknee Kruemmer Boge Kniestück

A turbo knee forms the Connection between turbocharger and downpipe. The turbo knee is often also called elbow or just as Bow designated. In order for the intake air to flow properly into the engine, the turbo must be in a certain position. This is made possible by the turbo knee. So it has no active, but rather a passive function.

Difference to the series component

A turbo knee is installed on all engines that use a turbocharger. So, these can be both gasoline and diesel engines. The difference between a turbo knee from a tuning accessory and a standard component is mainly the result of the performance characteristics and the reduction in heat build-up. However, it does not make sense to only install a turbo knee in tuning form (e.g. open), since this alone does not result in an increase in performance. Only the accumulation of heat may be reduced.

Tuning Turboknee Turbo Elbow Turboknee Kruemmer Boge Kniestueck E1655196730564

legal concerns

  • In principle, all parts that are changed, added or removed from a vehicle must also be typed. One E-approval number basically dictates the law. So it makes sense in any case, if you want to save high costs, to make sure that the turbo knee has an approval.


  • Which vehicles a modified turbo knee is suitable for is relatively easy to answer - all vehicles with turbo engines have a turbo knee, and only these can be modified or exchanged. The turbo knee is available in different sizes in terms of diameter and length of the component. Both tuned diesel and gasoline vehicles can be customized with different types of turbo knees.

APR Turboinlet Tuning Turbocharger 4 E1598266704678

How should it be installed?

  • A turbo knee only makes sense if there is improved air flow through the remaining parts of the exhaust system can be ensured. If the vehicle's performance is too low, but the diameter of the turbo knee is too large, air turbulence can occur within the exhaust system, which can lead to a back pressure and thus to irregular performance development or even a drop in performance. The diameter of the exhaust parts and the performance of the vehicle including the turbo should therefore have a certain degree of congruence with the remaining parts, so that negative effects on the engine and performance can be prevented.

Does the turbo knee always make sense?

  • Yes, the turbo knee itself does, but not the exchange - because, as already mentioned at the beginning, it is a rather passive part in the engine compartment. Depending on the manufacturer and the basic specification of the respective vehicle, only such a minimal or even no advantage can be achieved by changing the turbo knee that it is does not pay outto take the money for it. The costs for a tuning turbo knee are often well over 200/300 euros. You should not spend more than 80-100 € used, depending on the manufacturer and vehicle.

We hope that you have received our information report on the topic / term turbo knee (Other designations/keywords are: Turbo Elbow, Turboknee, elbow, bow, elbow, downpipe, knee) from the Autotuning category. Our goal is to create the largest German-speaking tuning lexicon (Tuning Wikipedia) and to explain tuning technical terms from A to Z easily and understandably. We are therefore expanding this lexicon almost daily and you can see how far we have already come HERE see. And soon the next tuning scene term illuminated by us. There's a theme that rather can be found in our Wikipedia? Then send us an email at kontakt@tuningblog.eu and gives us the term. We will write a suitable article as soon as possible. PS. By the way, you will be informed about new topics if you have ours Feed subscriber.

APR turbo inlet tuning turbocharger E1598266589759

Below are a few examples from our tuning lexicon:

But of course tuningblog has countless other articles on the subject of cars & car tuning in stock. Do you want to see them all? Just click HERE and look around. We would also like to provide you with news aside from the tuning. In our category Tips, products, information & Co we pick up contributions from car or accessory manufacturers. And also our category Test sites, laws, offenses, information has almost daily new information for you. Here are a few topics from our tuning wiki.

other related posts

Regulations on acoustic signals with a sequence of tones: melody horn!

Melody horn sound fanfare three-pipe horn compressed air fanfare car E1654407319586 310x165

Increased performance for buses: bus tuning!

Coach Omnibus Chiptuning Commercial Vehicles 2 310x165

Agricultural machinery & tractors - chip tuning!

Agricultural machine chip tuning E1653394145542 310x165

Tractor tuning for more power (chip tuning)

Case IH Magnum 340 CVX Performance Tuning 310x165

"tuningblog.eu" - on the subject of autotuning and car styling, we keep you up to date with our tuning magazine and present you with the latest tuned vehicles from all over the world every day. It is best if you subscribe to our feed and will be informed automatically as soon as there is something new about this post. And of course to all other contributions.

Leave a Comment

Your e-mail address will not be published.