AUDI B9 S4/S5/SQ5 OEM TURBO T51R MOD

AUDI B9 OEM TURBO T51R MOD

The T51R Mod increases the audible turbo characteristics of the OEM turbocharger, producing the aggressive sound commonly associated with large top-mount turbo setups or turbo diesel vehicles.

This modification is designed to enhance sound while maintaining OEM functionality.

• No retune required
• No supporting modifications required

For maximum sound, we recommend installing an aftermarket turbo inlet. OEM inlet pipes are designed to reduce turbo noise and may slightly dampen the effect of this modification.

If purchasing our provided housing option, you may receive OEM or aftermarket housings depending, on current inventory availability.

MADE TO ORDER - STANDARD LEAD TIME: ~2 WEEKS

Available Options:

Option 1 —  (Send-In Service)

Send us your turbocharger housing and we will machine it in-house and install the T51R modification. Once completed, your housing will be shipped back to you.

• Approximate turnaround: 2 weeks
• Shipping address will be provided on your email receipt/invoice after purchase

Option 2 —  (Modified Housing Provided)

Purchase a pre-modified housing directly from us. We will ship a finished housing that you can install at your convenience.

• Core must be returned within 30 days of receiving your housing

Email us for more info! You can ship your removed housing to us for cash back. This offer expires after 30 days of receiving product. 

Fitment:

• (2018-2025 3.0T V6 CWGD) AUDI S4, S5 Coupe, S5 Cabriolet, S5 Sportback, A8, QT, SQ5 Sportsback