Paulyy

Now when this noise started. What happend? how did it happen? What was the last thing you did before it happend?

ZW 944

Really, the wooshing noise has been with the car ever since I put the new turbo on as of last summer. I just never had the time to work on it until now because I'm still in college, and my studies (unfortunately) have to take precedence over the car. the fluttering noise is more recent - I first noticed it after a few high boost runs to make sure the MBC was set to the right pressure. Now I hear the fluttering even when its not up high in boost. Is it possible that the MBC could be making the fluttering noise? I went back and sealed all the MBC ports but it didn't seem to make a difference.

chrenan

Are you running a factory re-circ valve?

I'm running the exact same turbo, 26-6 cheater from Evergreen. It was always quiet with the stock air box setup. Its ungodly loud with the MAF.

ZW 944

I've got the Forge valve from LR, I'll try to post all my car's specs in my sig - still figuring that stuff out

I'm investigating that though, because I'm really not sure what else would cause a fluttering sound like what im getting other than the MBC.

chrenan

Same as me. I run a Lindsey Club Gate BOV and stock boost control.

333pg333

Get some video and upload it to Youtube or similar. Then post a link.

ZW 944

Heres a video, The wooshing sound wasn't as apparent today, the only change I made was to reverse the BOV a la other thread. It was still present at lower speeds though, just too quiet to get on film - other days it has been much louder.

http://www.youtube.com/watch?v=lIks-...ature=youtu.be

The fluttering is still somewhat quiet in the video, but it is alarmingly loud in person.

I hope this can help get to the bottom of this!! I want a normal sounding car again that I can floor without worrying.

Dougs951S

you keep describing the sound as a fluttering type noise.. unlikely, but could it possibly be compressor surge?

951Saga

315N I see...

PMing~

Black51

Are ya now?? You're just full of surprises aren't ya, y'ol sandbagger!

951Saga

So better at full boost?

chrenan

Hey, I've always said I'm running a 26-6, you never asked any follow-up questions!

eman930

I honestly don't hear it in the video... If your AFR's are good I wouldn't worry too much