i ran it with stock filter and still issues are there

@rossco sorry to sound dumb what is the best way to find the leak? do i need to run the "bubble test" with a squirt bottle that has some dishwasher liquid in it and spray and look for bubbles? or do a pressure test for a vacuum leak/smoke test etc?

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2002 WRX (GDA) BUGEYE, 204BHP at 290Nm, daily driven

--MODS--
--> Walbro 255LPH fuel pump
--> Grimmspeed 3 port EBCS
--> 3" turbo back exhaust
--> Catless up pipe