andyx187 Posted June 11, 2019 Share Posted June 11, 2019 I’m getting a overboost and then engine lights comes on when plugged in it says this see pic Sent from my iphone using Tapatalk Quote Link to comment Share on other sites More sharing options...
savage bulldogs Posted June 11, 2019 Share Posted June 11, 2019 Has it been mapped ? Has it got any modifications? If not then check vacuum lines from boost solenoid, actuator and inlet manifold for leaks ,cracks or missing hoses . If Nothing seems visually wrong you can remove the boost solenoid and clean it with brake cleaner to see if that improves things . Failing actuator could be another culprit but you'd need to pressure check that with a vacuum pump to see if its operating at the correct pressure for your model . Quote Link to comment Share on other sites More sharing options...
andyx187 Posted June 11, 2019 Author Share Posted June 11, 2019 Yes has been modified boost is normally 1 1.2 bar max it’s going up to 1.4 - 1.5 then it like it hits a wall and engine light comes on . I have cleaned solenoid no difference Sent from my iphone using Tapatalk Quote Link to comment Share on other sites More sharing options...
savage bulldogs Posted June 11, 2019 Share Posted June 11, 2019 If it's had "breathing " mods like decat ,intake pipework, cone filter ect it should be mapped . I assume it hasn't been mapped as most mappers would have mapped in a higher 1.4/ 1.5 boost target. If it hasn't been mapped that might well explain why you're getting overboost , as the oe ECU parameters can be exceeded because boost control system will be working overtime trying to keep the boost in check . This could cause the boost solenoid or actuator to weaken . Personally I wouldn't drive a unmapped scooby with breathing mods on boost until its been mapped. There's only really boost solenoid, actuator, ECU solenoid duty and vacuum lines that control boost , so one of those is at fault . Quote Link to comment Share on other sites More sharing options...
andyx187 Posted June 11, 2019 Author Share Posted June 11, 2019 I have had it 1 year now and only just started doing this it has some prodrive bits on the car in engine Sent from my iphone using Tapatalk Quote Link to comment Share on other sites More sharing options...
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