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i don't remember exactly, but i can answer this tomorrow or the next day. standart ic, just an hks filter behind the drive-side light (left side drive). The efi pipe is still there

Hello mates, excuse my bad english, i'll try to make the problem as understandable i can. I run a stock engine without a catalyst and at around 12psi using an adjustable actuator(not sure if it's HKS) My problem is that althought in first and second gear boost raises normally, in the rest of...