4.0TT Intake Upgrade

The largest intake system that's available for the 4.0tt platform with a true full 2.5" intake runner all the way to the turbo. Inlet depression on the stock turbo can reach 750mbar while our inlet pipe doesn't drop below 900 resulting in a free 3-4psi on the top end. 30-40hp gains consistently at redline. 5 axis machined inlet snouts are welded to mandrel-bent tubing specifically designed for this application. Fits S6 S7 RS6 RS7 4.0TFSI applications. This does NOT fit the D4 S8.

*If purchasing for model A8, please purchase our S8 intakes*

This product is a part of the following bundle(s):

SRM850 4.0TFSI Turbo Kit

The largest intake system available for the 4.0tt platform with a true full 2.5" intake runner all the way to the turbo. Inlet depression on the stock turbo can reach 750mbar while our inlet pipe doesnt drop below 900 resulting in a free 3-4psi on the top end. 30-40hp gains consistently at redline. 5 axis machined inlet snouts are welded to mandrel bent tubing specifically designed for this application. The kit comes with hardware install kit and 2 genuine k&N filters for long version kit only.

Dyno validation - https://www.audizine.com/forum/showthread.php/819063-Dyno-test-results-SRM-Luftwaffe-air-intake-system-Graphs-Video-Photos-Audi-S6-S7-4-0T

Installation DIY - https://www.audizine.com/forum/showthread.php/824919-SRM-Intake-install-step-by-step

Fits S6 S7 RS6 RS7 A8 4.0tfsi applications. This does NOT fit the D4 S8.

Dyno graph is a before and after of swapping stock RS7 Inlets to our inlets on our +4 turbos.

The other chart shows the reduction of turbocharger inlet pressure drop. 65% at stock power/airflow levels and increasingly higher.

*NOTE If purchasing 3.0" Upgrade for A2A only customer must already have A2A installed due to space constraints! These will not fit without our A2A kit!

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