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Mine has screwed up cause i touched something on the back. It used to act as a boost gauge and i could adjust the boost then set it and it would go back, now it comes up with P1 or P2 then sometimes AE then when i change the boost it wont set it it just flashes the boost, whats goin on with it!! I knwo theres 4 swithches on the back have i hit one of these??? Please help:confused:

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