• Unitronic releases Audi 2.5 TFSI Evo 3-inch turbo inlet elbow which increases airflow by 12%

      Here is a great modification from Unitronic which increases 2.5 TFSI efficiency. The Unitronic 2.5 TFSI EVO 3-inch turbo inlet elbow will provide gains of 18 horsepower and 8 lb-ft of torque while improving airflow by 12%.

      Essentially you are removing a restriction in the intake tract. This is a direct bolt on modification for the stock Borg Warner 2.5 TFSI turbocharger.

      Here is an airflow example:

      Pressure Differential (PSIA) @ 28inAq:

      Air Velocity (Mach) @ 28inAq:

      Why Unitronic chose this design:

      Quote Originally Posted by Unitronic
      Extra attention was spent to allow for a complete one-piece design including CNC-machined inlet and outlets, a fully integrated PCV routing with CNC-machined connection flange, and an ultra-smooth, flow-matched ariflow transition into the turbocharger.

      Mostly importantly and in keeping consistent with the factory emissions and PCV system, Unitronic’s fully integrated PCV routing functions as it was originally intended by Audi’s Engineers responsible for designing the 2.5TFSI EVO EA855 engine. A pressure plot of the PCV exit shows that is has been positioned for optimized functionality.
      Unitronic comparison to OEM:

      To be noted, this elbow does not just apply to the factory turbocharger:

      Quote Originally Posted by Unitronic
      Through the elimination of upstream [pre-compressor] restrictions, Unitronic’s new 3” Turbo Inlet Elbow improves the efficiency of the factory Borg-Warner turbocharger and is compatible with many stock frame hybrid turbochargers, including the TTE625, TTE700, and SRM GTX35.
      Now how about some data?

      Iroz picked up 13 whp over stock on a Stage 1 tuned RS3 on E85 with an IE intake.

      Unitronic picked up 18 horsepower on their MAHA LPS3000 with a Stage 2 TT-RS on 93 octane fuel. The intercooler and intake system also was upgraded on the test car.

      This product does not fit RHD cars but expect RHD compatibility next year.


      • +18 HP / + 8 LB-FT TQ on Unitronic MAHA LPS3000 dyno

      • +13 WHP on Land and Sea dyno (courtesy Iroz Motorsport)

      • 12% increase in flow

      • Aircraft grade cast Aluminum construction

      • Fully integrated PCV recirculation artery

      • OEM PCV functionality for adequate crankcase ventilation

      • CNC-machined mounting flanges, inlet and outlets

      • Smooth airflow transitions

      • Direct bolt-on fitment

      • Compatible with OEM stock intake and many aftermarket intake systems

      • Dyno and flow bench proven power, torque, and airflow gains

      This upgrade is a no brainer for $299:

      This article was originally published in forum thread: Unitronic releases Audi 2.5 TFSI Evo 3-inch turbo inlet elbow which increases airflow by 12% started by Sticky View original post