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    • Forge Motorsport Audi C7 RS6/RS7 & S6/S7 4.0 TFSI V8 carbon fiber high-flow airboxes show 12 horse gains

      Improving the flow and removing restriction of the intake tract is a long time tried and true way to gain power when tuning. Modern airboxes tend to be pretty well designed but Forge Motorsport was able to show some nice gains on the Audi 4.0 TFSI V8.



      This airbox design applies to the C7 S6, RS6, S7, and RS7. The dyno graph is in crank output on a stock car which appears to be either an RS6 or RS7:


      The meat of the gains really come past 4000 rpm. Keep in mind you will likely see greater gains on a tuned example when moving much more air.

      Certainly worth looking into for those trying to squeeze out every horse from their 4.0 TFSI.








      This article was originally published in forum thread: Forge Motorsport Audi C7 RS6/RS7 & S6/S7 4.0 TFSI V8 carbon fiber high-flow airboxes show 12 horse gains started by Sticky View original post