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  1. Engine / Turbo
    Afternoon all, Basically i have a Evo 5 with 370 odd bhp and was mapped by Russ Paton to that @ 26PSI. Now the car is Overboosting :wallbang: up to 30+PSI so i Instanlty got the actuator (Forge Motorsport Item) off and replaced the Diaphram and Spring to see if that would sort it but no joy...