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with departure exhaust and apexi filter.(1.2bar)!!! read some posts about the wastegate sticking open? could this be the cause? bypass all VSV etc. Remove the decat, and you'll probably see where she's been fowling. i think its a xs power one altho there is no markings on it. was going to remove the ball and spring to run it on actuator pressure. was hitting 1.2 - 1.3 bar. When Tim removed the XS-Power one, you could see where the wastegate was hitting the pipe when trying to open. As it can't open fully, you then get boost creep.(so you'll need to remove it), you will notice that the flat side of the decat pipe (inside edge that mates to the turbo) is vertical it should be slanted and this is what causes the fouling of the wastegate.£111 from MrT + VAT was not good.& 2 Vs Rev 3.& 2 is around 13psi, but Rev 3 is around 17psi (stock).(less flow), so so less boost.(in some cases), rather than fixing the root cause. See if this helps: got a manual boost controller in there now and remoed the ball and spring. car is boosting to 0.9 bar.