[Aqid]

Okay I'm partly posting this just because it sounds funny, but in all honesty, I'm wondering if someone has ever encountered their n54 sounding like a party whistle Got the issue a day before installing metal CP with BOV so I know its not the CP. Going to check the rest of the piping this weekend probably, I expect maybe a hose clamp that gave out or something?

[ghynds]

lol what even... my guess should be something is loose given that it's happening at higher rpms
any codes?

[Aqid]

Didn't get a chance to look at it yet. But yeah, I've been monitoring my boost gauge and its only past 10-11 PSI. For now I flashed map 1 back and it barely happens, but it sounds like escaping air somewhere. Sounds like the passenger side too. So for now my best bet is either the hot side FMIC pipes or the PCV valve.

[ghynds]

Originally Posted by Aqid

Didn't get a chance to look at it yet. But yeah, I've been monitoring my boost gauge and its only past 10-11 PSI. For now I flashed map 1 back and it barely happens, but it sounds like escaping air somewhere. Sounds like the passenger side too. So for now my best bet is either the hot side FMIC pipes or the PCV valve.

ahhh ok lmk what happens, i'm currently having a boost problem atm aswell sounds like a whistle when i let off but not like yours, hard to tell bc i have a bov, but there's a whoosh then another whoosh afterwards, flash to stock code and noise goes away for me

[Jeff@TopGearSolutions]

Boost leak, check connections. Stock doesn't make as much boost, thus it doesn't leak as much or make as much noise.

[deputy]

Super high frequency, which could be the rotating turbo shaft assembly or a silicone connector flapping (think pinching and stretching a balloon neck to make a SUPER similar sound). First place id start is making sure all connectors are clamped straight, flush and tight.