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restrictor

  1. Engine and Transmission
    We are selling 2 stock Subaru WRX TD04 turbo's with milled cold side intakes and safety wired 34mm restrictors installed. The first turbo has a Prodrive restrictor, only 2300 miles on it with no shaft play (either side to side or in/out). Both the cold side intake and the restrictor where...
  2. Car Construction and Equipment
    Hi all, I was having a discussion with someone, and I had heard a while ago that, even with a nicely radiused, optimized throat angle, 34mm restrictor, the maximum theoretical horsepower is ~300 whp, due to the inability to flow enough air to support higher whp levels. Yes, we all know that...
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