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I installed my iag aos yesterday in my 2010 sti and afterwards I am feeling some hesitation with the throttle at low rpm and also missing my peak boost numbers by about 4psi. I checked that everything was fastened securely after install and ran it for a while to check for leaks. I am wondering if anyone has experienced something like this after an aos install and maybe what could have happened.

Side note: one of my small vacuum lines that attaches the t fitting by the turbo had some holes in it and I replaced it, but the hose I replaced it with had a smaller inner diameter than the one I took off (it was all I had available). I don't believe it was the hose with the pill in it since I am still hitting well over 8psi. Could the change in diameter there be my problem?

p.s. I'm sorry if I posted this in the wrong spot. This is my first post on the forum.
 
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