hey i know its a stupid question, but does that wastegate make any noise when letting off the thottle after being in boost? me knowing what both the BOV and WG is seems like a pretty obvious answer. but ive never heard a BOV make a fluttering sound. is it coming from the WG? im pretty sure i can hear a swooosh that is clearly the BOV. so my main question is what is making the fluttering sound?

BTW i have a 50mm TiAL BOV, 44mm TiAL WG

i searched, some people with hks BOV flutter, but i have yet to see it with a TiAL

 

tial bov makes a whip sound... is your dumptube open? compressor surge?

 

yes my dump tube is open. could it be possible i have to strong of a spring in my BOV?

 

what spring is in the bov?
i have the biggest spring, because of the vac i have at idle, and the boost i run, if it is too tight, OR you have an inadequate vacuum source, it will surge.

 

Yes it could be the spring I had a blitz BOV on my old 240 and it used to flutter all we did was loosen the adjustment screw up and it fixed it.