Cliodom172

Hi there I’ve recently had my car mapped and it kept playing up on the dyno running fine hitting boost and then not hitting but they couldn’t solve it so brought it home and it’s like it’s flat and holding back and then you let off and apply pressure to throttle it works perfectly fine and boosts but comes and goes when it works where should I start someone said the solenoid valve block could cause it Thankyou 🙏🏻