Thank you to everyone who has responded.
I need to clarify how the dealer "cleaned" the injectors. They hooked up some kind of spray can and sprayed that through the engine while it was running. Kind of a BS way to clean them IMO. I did check all of the lines and they are in great shape. No...
I have a 2012 GT 500 with about 80k miles. Very little mods as far as I know. Only exhaust and a mild tune.
The issue I’m having is under moderate acceleration the boost surges. Seems to only happen under about 10PSI boost. Will drop 5 psi then come back. Under full throttle it doesn’t do it...