Hi every one i have a wrx import it use to be a auto but was changes to manual i have not had the car long after a day driving the car around it stared to feel like the car was missing on boost it had a z4 ecu but i change it back to the stander one thinking it could be that but now it feel so slow and still misses now and again pls pls pls pls the car is a p reg and only do 85 k i have tried to turn the boost up buy adding a boost valve but it gets worse iv change the plugs and leads but this has not helped was told these a wire on the ecu that need to be cut as the car still thinks its a auto . cheers Tim

IV CLEANED THE BOOST solenoid still no look i have a z4 ECU thought it could be that so but old back on but still no look pls some one must know whats up