Just did a trackday yesterday at Knockhill to try out my new Mods, a full de-cat using a Magnex twin-port DP, P1 centre and scoobysport BB, TEK 2.5 and a pipercross panel filter. Car ran fine for a lot of laps (coming in and out to cool the brakes) then suddenly lost boost after about 10 laps out(very hot). No CEL but when I checked the turbo the wastegate was open at idle. It stayed this way when it turned off also making me belive it was a jammed wastegate. This turned out to be the problem. I separated the wastegate from the actuator but it felt free (cue burnt fingers! ) and the actuator popped back in as it should do. I freed everything up and put it back together and went back out on track and had the same problem after 4 laps. Freed it off again but found that if I tapped the actuator arm back down on to the wastegate spindle it suddenly closed again. Problem kept returning when the car was getting hot.

Just wondering if anybody else has experienced this and what they may have done to cure it. The car is a UK MY00.

Thanks Jamie

 

First try another W.G. actuator as yours is, hopefully, goosed. If it is not that, it is possible there is a problem with the penny valve or the spindle running through the boss connecting it.
Get your map checked as it sounds like you had a lot of heat.

 

Thanks Harvey, will try that when I get a chance. Runs fine on the road BTW.