PLeaseeee if you know anything about workings of a subaru/warrenty read this
09 subaru wrx. like 25k miles, had it one year. mods are: downpipe, rec. bov, cia, cbe, fuel pump, 3 port, and straight piped. no clue whats wrong with it but any time i get close to hitting boost it makes a horrible sound. hard to describe. like a whooshing-holding the car back kinda sound. ive checked alll the vacuum hoses and everything i can think of. checked inter cooler piping so i dont think its a leak.
question is does anyone have an idea what this may be, and with said mods do you think it would void my warranty. the only thing i cant change out is putting the cat back on the car. i can swap everything else out.
any and all answers are greatly appreciated