I have a S20G with the actuator set at 10 psi from HRC. I am also running the Greddy E 01 boost controller. Now, with boosting it only reaches 9psi or so. I am thinking its because of the big FMIC from HRC. However, the mechanic set the E01 at 15psi and it only reaches 9psi. I have no clue as to what might be wrong. It is a brand new turbo. Thanks for any help.

9psi with a 10psi actuator is normal for a pressure drop with the FMIC. But setting the boost controller at 15psi and only hitting 9psi isn't. I'd say first check for any boost leaks, then maybe throw a manual boost controller on it and see if that works. Then you'll know if the EBC is either not working or not hooked up right.

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either not hooked up write or not set right. im not familar with thr greddy E01 EBC, but the profec b 2 has a few settings that effect overall boost pressure. when one goes up, the boost goes down...and so on.

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I was under the impression that my mechanic had messed with the E-01, but I was mistaken. He told me that he did not mess with it at all. He only let the actuator do its job and nothing more. So I have a 15psi actuator and we are switching it so I can always run 15psi on the street.
Thanks for the help