Good call. I'll pay more attention to the check engine light. I've been looking at the boost gauge and AFRs.If you have the stock ECU do you get a flashing check engine light when you think its hitting boost cut? Pretty sure the stock 7M ECU does that from memory. If you have a boost gauge it should be pretty easy to determine if its over boosting. If it is I'd check the vacuum lines to the wastegate and make sure the gate is smooth.
Thanks man. I'll have to google your idea. Sounds easy enough but I need to see pictures so i can visualize it.It's worth making a boost leak checking plug, basically a pvc pipe/cap with a schrader valve in the end, pressurize your system and see where it leaks. Excellent to hear that bad boy is out on the road though , well done.