Right my set up Blitz ecu after market mani, decat, full jap speed system which i have fitted recently. I was running a hdi boost controller but it started to over boost yesterday to 1.2-1.4 bar!!(thought the hdi unit had gone down) so went back to the actuator/turbo only which before i fitted the exhaust was set @.9 and ran fine and now its still over boosting to 1.2 which while fun is not something i want to be doing! Even when the hdi controller set @ it's lowest position it will over boost as if its not doing what it is supposed to do. Acutator not working proper/sticking?? Anyone any ideas as to why or what the issue may be?? John