2.5 Engine Tuning Guides
Tuning guide for 2.5 TFSI EA855 EVO engines
Up to 1.000 hp with your RS in 5 tuning stages!
Regardless of statutory warranty claims, we offer a voluntary three-year warranty on our BAR-TEK® products and Turbo-Total brand performance turbochargers. This warranty covers defects in materials and workmanship. The statutory rights of the consumer ("warranty holder") remain unaffected by this warranty.
The warranty takes effect from the date of purchase.
The warranty is void in the event of improper use and, in particular, in the following cases:
Our racing engines are excluded from the three-year warranty.
In the event of a warranty claim, we have the right to either replace or repair the defective part. Claims beyond repair are not accepted. Claims by the warranty holder due to intentional or grossly negligent conduct on our part, our agents, or legal representatives, as well as claims for injury to life, body, or health, remain unaffected.
The warranty applies exclusively to the original purchaser. In particular, it does not apply in the case of resale or gifting.
Here you can download the warranty terms and conditions.
Regardless of statutory warranty claims, we offer a voluntary three-year warranty on our BAR-TEK® products and Turbo-Total brand performance turbochargers. This warranty covers defects in materials and workmanship. The statutory rights of the consumer ("warranty holder") remain unaffected by this warranty.
The warranty takes effect from the date of purchase.
The warranty is void in the event of improper use and, in particular, in the following cases:
Our racing engines are excluded from the three-year warranty.
In the event of a warranty claim, we have the right to either replace or repair the defective part. Claims beyond repair are not accepted. Claims by the warranty holder due to intentional or grossly negligent conduct on our part, our agents, or legal representatives, as well as claims for injury to life, body, or health, remain unaffected.
The warranty applies exclusively to the original purchaser. In particular, it does not apply in the case of resale or gifting.
Here you can download the warranty terms and conditions.
Our gearbox oil catchtank for your 2.5 TFSI as in the Audi RS3 and TT RS puts an end to oil all over the engine bay! The crankcase ventilation is made of plastic as standard. The gearbox oil can expand here and the resulting oil vapors can escape. However, as soon as the system is overloaded, the oil then sprays uncontrollably through the engine bay.
Optimized catchtank for Audi RS3 8V & TTRS 8S DQ500
Our catchtank system for the gearbox oil is easy to install in your RS3 or TT RS and is quite compact while also being maintenance-free thanks to the return adapter. Thanks to its features, the auxiliary tank ensures smooth engine running and the usual high performance.
The catchtank collects the fluids that escape from the gearbox. At the same time, the trapped gases are vented through a filter. However, it only allows the fluids to enter the can at a certain angle. This prevents the fluids from spraying through the filter. The gearbox oil then simply flows back again.
Thanks to this process, you do not have to empty the catchtank constantly. The result is clean combustion and increased knock resistance of the fuel-air mixture and thus overall smoother engine running.
Features:
Depending on the vehicle model, a different bracket may be required. You can find these alternative brackets under accesories.
Average rating of 5 out of 5 stars
4 reviews
10 January 2026 10:09
Review with rating of 5 out of 5 stars
no comment
no comment
9 December 2025 09:54
Review with rating of 5 out of 5 stars
DSG Catch Tank
Macht was er soll. Öl Austritt wie beim Serienteil hat sich erledigt. Nachdem ich den Catch Tank bereits an meinem Audi RS3 8V hatte und damit voll und ganz zufrieden war, musste er auch wieder beim Audi TTRS 8S rein.
21 July 2025 02:55
Review with rating of 5 out of 5 stars
Alles bestens, sehr guter Preis. 120 Eur
Alles bestens, sehr guter Preis. 120 Euro günstiger wie bei anderen Anbietern.
22 November 2021 00:00
Review with rating of 5 out of 5 stars
Ist ein super qualitativ hochwertiges Pr
Ist ein super qualitativ hochwertiges Produkt, verhindert das Getriebeöl im Motorraum verteilt wird. Funktioniert perfekt
2.5 Engine Tuning Guides
Up to 1.000 hp with your RS in 5 tuning stages!
accesories
BAR-TEK®
BAR-TEK Motorsport GmbH
Im Rauschen Auel 3, 51491 Overath-Brombach, Germany
Our gearbox oil catchtank for your 2.5 TFSI as in the Audi RS3 and TT RS puts an end to oil all over the engine bay! The crankcase ventilation is made of plastic as standard. The gearbox oil can expand here and the resulting oil vapors can escape. However, as soon as the system is overloaded, the oil then sprays uncontrollably through the engine bay.
Optimized catchtank for Audi RS3 8V & TTRS 8S DQ500
Our catchtank system for the gearbox oil is easy to install in your RS3 or TT RS and is quite compact while also being maintenance-free thanks to the return adapter. Thanks to its features, the auxiliary tank ensures smooth engine running and the usual high performance.
The catchtank collects the fluids that escape from the gearbox. At the same time, the trapped gases are vented through a filter. However, it only allows the fluids to enter the can at a certain angle. This prevents the fluids from spraying through the filter. The gearbox oil then simply flows back again.
Thanks to this process, you do not have to empty the catchtank constantly. The result is clean combustion and increased knock resistance of the fuel-air mixture and thus overall smoother engine running.
Features:
Depending on the vehicle model, a different bracket may be required. You can find these alternative brackets under accesories.
Average rating of 5 out of 5 stars
4 reviews
10 January 2026 10:09
Review with rating of 5 out of 5 stars
no comment
no comment
9 December 2025 09:54
Review with rating of 5 out of 5 stars
DSG Catch Tank
Macht was er soll. Öl Austritt wie beim Serienteil hat sich erledigt. Nachdem ich den Catch Tank bereits an meinem Audi RS3 8V hatte und damit voll und ganz zufrieden war, musste er auch wieder beim Audi TTRS 8S rein.
21 July 2025 02:55
Review with rating of 5 out of 5 stars
Alles bestens, sehr guter Preis. 120 Eur
Alles bestens, sehr guter Preis. 120 Euro günstiger wie bei anderen Anbietern.
22 November 2021 00:00
Review with rating of 5 out of 5 stars
Ist ein super qualitativ hochwertiges Pr
Ist ein super qualitativ hochwertiges Produkt, verhindert das Getriebeöl im Motorraum verteilt wird. Funktioniert perfekt
2.5 Engine Tuning Guides
Up to 1.000 hp with your RS in 5 tuning stages!
accesories
BAR-TEK®
BAR-TEK Motorsport GmbH
Im Rauschen Auel 3, 51491 Overath-Brombach, Germany