HI just changed my turbo intake pipe for a silicone one, def wider diamiter thru the pipe , also put an uprated turbo intercooler pipe & uprated wider diamiter y pipe , after fitting turbo is whistling like iv never heard before ,its got me thinking leaks , but iv double checked everything for tightness all seems ok ,, could thease upgrades be making my turbo do this ? car is a hawkeye sti ,full decat ecutek ,headers ,etc etc..just it didnt whistle before the y pipe & intake pipe replacement

 

plenty looks but no help