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jamie has a slow van

  1. Engines and Transmission
    tryin to put a boost control valve on a 1.7DTI in a MK4 astra van (don't ask) but cant seem to make it have any effect. i think these have a over boost soleniod thingy or something so would the ECU just compensate for me altering the boost and keep it at stock levels? i'm pretty sure the valve...