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recirc valve

  1. tuning recirc valve

    Engine Modifications
    I had to put a new recirc valve on my 2010 WRX. The old one was screwing up and causing my boost to jump around. I ended up with a Perrin from a local shop. I put it on and had to drive to KS this weekend, I started with it at the factory positions. When my cruise control was set I noticed...
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