1.8T Engine Tuning Guides
Tuning guide for 1.8T AGU engines with 150 hp
Maximum power for Golf 4 and A3 with engine code AGU
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.
RACE N75 valve for all VAG 1.8T 20V engines for instant extra power!
Increase in torque (approx. 45 Nm) and engine power (approx. 30 hp) in the overboost range. Absolutely safe for the engine thanks to the latest generation (release 2018) No levelling or errors in the engine control unit!
Features:
Very quick and easy tuning of your 1.8T 20V Turbo Motors.
Suitable for all 1.8T 20V engines (ATTENTION: ONLY FOR SERIAL SOFTWARE !)
Here is the performance diagram from our Maha test bench:
In some vehicles, the N75 causes an error in the boost pressure control. If this is the case for you, the software must be adapted.
Average rating of 0 out of 5 stars
1 - 10 of 16 reviews
10 March 2026 15:24
Review with rating of 2 out of 5 stars
False instructions
Installation instructions are wrong, so I haven't had the chance to really test it. Or first test it jumped to 1,6bar so I removed it.
15 July 2025 21:24
Review with rating of 4 out of 5 stars
no comment
no comment
23 October 2024 16:19
Review with rating of 5 out of 5 stars
MUY CONTENTO SE NOTA MUCHISIMO Y CON TUR
MUY CONTENTO SE NOTA MUCHISIMO Y CON TURBO HIBRIDADO HAUN MAS PERFECTO
14 October 2024 13:10
Review with rating of 5 out of 5 stars
Puesta es S3 8L Turbo hibridado y perfecta
no comment
19 August 2024 10:28
Review with rating of 1 out of 5 stars
Vyrobok nesplnil očakávania a po instala
Vyrobok nesplnil očakávania a po instalacii n75 race nahla strata výkonu a pokles plniaceho tlaku turba z 0.8baru na 0.3baru . Neprišlo žiadne navýšenie výkonu ani krútiaceho momentu. Po montáži original n75 ventilu sa vratil späť sériový výkon a aj plniaci tlak turba. Táto spoločnosť zavadza a klame zakaznikov. Tento produkt nekupovat za žiadnu cenu
16 June 2024 13:00
Review with rating of 5 out of 5 stars
Das N75 Ventil ist der hammer. Sehr empf
Das N75 Ventil ist der hammer. Sehr empfehlenswert für schnelles und einfaches tuning am Motor.
6 May 2024 16:53
Review with rating of 3 out of 5 stars
Habe beim A4 Cabrio ein ganzen Nachmitta
Habe beim A4 Cabrio ein ganzen Nachmittag geschaut wie der eingebaut werden soll. Entweder bin ich zu blöd dafür oder er passt einfach nicht. Wie ich ihm rumdrehe entweder passen die Schläuche nicht oder bekomme den Stecker nicht drauf…. Schade das da keinen Anleitung dabei ist wie man ihn einbauen muss
6 July 2023 16:19
Review with rating of 5 out of 5 stars
Sehr guter Qualität. Habe es noch nicht
Sehr guter Qualität. Habe es noch nicht Installiert, aber bin mir sicher, dass alles von Bar.Tek Top sind
6 July 2023 13:45
Review with rating of 5 out of 5 stars
Sehr guter Qualität. Habe es noch nicht
Sehr guter Qualität. Habe es noch nicht Installiert, aber bin mir sicher, dass alles von Bar.Tek Top sind
17 March 2023 16:19
Review with rating of 5 out of 5 stars
Tip top. Danke
Tip top. Danke
1.8T Engine Tuning Guides
Maximum power for Golf 4 and A3 with engine code AGU
1.8T Engine Tuning Guides
Up to 320 hp: How to tune your 1.8T engine with code AEB
1.8T Engine Tuning Guides
You can more than double the performance of your Audi S3!
1.8T Engine Tuning Guides
From 180 hp up to 666 hp with your 1.8T engine!
1.8T Engine Tuning Guides
More driving fun with your Audi A4 - up to 666 hp!
Full power for your Audi A4: Up to 666 hp performance!
With these power levels you can reach up to 666 hp!
1.8T Engine Tuning Guides
Pro guide for up to 666 hp power!
ECU and Engine Tuning
BAR-TEK®
BAR-TEK Motorsport GmbH
Im Rauschen Auel 3, 51491 Overath-Brombach, Germany
RACE N75 valve for all VAG 1.8T 20V engines for instant extra power!
Increase in torque (approx. 45 Nm) and engine power (approx. 30 hp) in the overboost range. Absolutely safe for the engine thanks to the latest generation (release 2018) No levelling or errors in the engine control unit!
Features:
Very quick and easy tuning of your 1.8T 20V Turbo Motors.
Suitable for all 1.8T 20V engines (ATTENTION: ONLY FOR SERIAL SOFTWARE !)
Here is the performance diagram from our Maha test bench:
In some vehicles, the N75 causes an error in the boost pressure control. If this is the case for you, the software must be adapted.
Average rating of 0 out of 5 stars
1 - 10 of 16 reviews
10 March 2026 15:24
Review with rating of 2 out of 5 stars
False instructions
Installation instructions are wrong, so I haven't had the chance to really test it. Or first test it jumped to 1,6bar so I removed it.
15 July 2025 21:24
Review with rating of 4 out of 5 stars
no comment
no comment
23 October 2024 16:19
Review with rating of 5 out of 5 stars
MUY CONTENTO SE NOTA MUCHISIMO Y CON TUR
MUY CONTENTO SE NOTA MUCHISIMO Y CON TURBO HIBRIDADO HAUN MAS PERFECTO
14 October 2024 13:10
Review with rating of 5 out of 5 stars
Puesta es S3 8L Turbo hibridado y perfecta
no comment
19 August 2024 10:28
Review with rating of 1 out of 5 stars
Vyrobok nesplnil očakávania a po instala
Vyrobok nesplnil očakávania a po instalacii n75 race nahla strata výkonu a pokles plniaceho tlaku turba z 0.8baru na 0.3baru . Neprišlo žiadne navýšenie výkonu ani krútiaceho momentu. Po montáži original n75 ventilu sa vratil späť sériový výkon a aj plniaci tlak turba. Táto spoločnosť zavadza a klame zakaznikov. Tento produkt nekupovat za žiadnu cenu
16 June 2024 13:00
Review with rating of 5 out of 5 stars
Das N75 Ventil ist der hammer. Sehr empf
Das N75 Ventil ist der hammer. Sehr empfehlenswert für schnelles und einfaches tuning am Motor.
6 May 2024 16:53
Review with rating of 3 out of 5 stars
Habe beim A4 Cabrio ein ganzen Nachmitta
Habe beim A4 Cabrio ein ganzen Nachmittag geschaut wie der eingebaut werden soll. Entweder bin ich zu blöd dafür oder er passt einfach nicht. Wie ich ihm rumdrehe entweder passen die Schläuche nicht oder bekomme den Stecker nicht drauf…. Schade das da keinen Anleitung dabei ist wie man ihn einbauen muss
6 July 2023 16:19
Review with rating of 5 out of 5 stars
Sehr guter Qualität. Habe es noch nicht
Sehr guter Qualität. Habe es noch nicht Installiert, aber bin mir sicher, dass alles von Bar.Tek Top sind
6 July 2023 13:45
Review with rating of 5 out of 5 stars
Sehr guter Qualität. Habe es noch nicht
Sehr guter Qualität. Habe es noch nicht Installiert, aber bin mir sicher, dass alles von Bar.Tek Top sind
17 March 2023 16:19
Review with rating of 5 out of 5 stars
Tip top. Danke
Tip top. Danke
1.8T Engine Tuning Guides
Maximum power for Golf 4 and A3 with engine code AGU
1.8T Engine Tuning Guides
Up to 320 hp: How to tune your 1.8T engine with code AEB
1.8T Engine Tuning Guides
You can more than double the performance of your Audi S3!
1.8T Engine Tuning Guides
From 180 hp up to 666 hp with your 1.8T engine!
1.8T Engine Tuning Guides
More driving fun with your Audi A4 - up to 666 hp!
Full power for your Audi A4: Up to 666 hp performance!
With these power levels you can reach up to 666 hp!
1.8T Engine Tuning Guides
Pro guide for up to 666 hp power!
ECU and Engine Tuning
BAR-TEK®
BAR-TEK Motorsport GmbH
Im Rauschen Auel 3, 51491 Overath-Brombach, Germany