My car is making a loud fluttering sound once i let off the gas after boosting. I changed out my stock 8 dv for the metal stock 9 dv thinking that may help, but it didnt. Its been doing this for a while now, but not this loud. I really just want to make sure it isnt harmful... from what i can tell on synapse's videos online it sounds like flutterdump? but i honestly cant tell. how can i tell if its compressor surge? it sounds the same to me.

car is at about 350whp and only boltons (tbe, intake, licp, ams fmic, ebay o2, 9 dv) with an english tune at 22 psi

 

Check for boost leaks..same issue with mine

 

thats what we were going to do today. its just so annoying to have to hear it every shift

 

check the bov/dv then vaccum lines and fmic piping couplings..let me know the results

 

will do

 

Check all the Ic piping..its always the small things..could be the bov not opening up..

 

thats what i thought... i got the 9 dv but no noticable change. im checking ic piping now

 

Make sure u check the coupling itself..not just tightening the clamp..cuz the couplings sometimes get cracked up and there u go...boost leak right there.

 

found zero leaks or cracks in couplers today.

 

in for updates. could your BOV be leaking? Crushed wastegate?

 

Then it might be ur dv or vaccum lines...did it always used to sound like that?

 

i was wondering if it could be the wastegate. how would i check that?

 

didnt always sound like this. only after i changed the intake to the aem. its driving me crazy though

 

Dude..fureal man my aem is fluttering like crazy..is ur car tuned?btw my car pushing 10lbs lol so yea lol

 

yeah tuned by english racing. i figured they wouldve said something if it was harmful but they didnt... idk man