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Is this the best thing to happen to the B9 S4/S5?? New TTE850 testing

  • July 23, 2026
  • |
  • Bill Sanderson

 

For years, B9 owners have been stuck around the 600-650hp mark with the typical hybrid turbo upgrades. The Pure750, TTE710 and TTE810 are all fine turbos in their own right, but all share one major downside: they all use the stock compressor and turbine housings. 

The truth is that while you can machine the housings and install larger wheels, there comes a point where the wheels will outflow the housings. At this point, it doesn't matter how big the wheels are, you will not make any more power (conversely, you might make less). This has been proven time after time with bigger and bigger hybrids such as the GTX and G-Series hybrids found on Alibaba and around various websites making the same power as "smaller" hybrids like the Pure750 and TTE810.

Come with us as we dissect the newest TTE offering, offer in-depth analysis, and test the new turbo back to back against the TTE810!

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