Kareem of Elise

I've got the Forge 007P piston DV. Yesterday I began noticing when lifting off the accelerator, instead of hearing the normal "whooosh" sound of the air recirculating, I was hearing a staccato-like stuttering sound. I'm guessing that's DV flutter.

I hadn't serviced the DV since I put it in back in Jan., so I figured that would take care of it. I bought some synthetic grease, took the valve out, took it apart, and cleaned every part including the o-rings. I lubed it with the new grease and put it back in. It seemed to go completely away for a while, but now it's only doing it every now and again. I've checked the vacuum hose on top and it's good with no cracks. I'm still holding good boost as well.

I took out the washers I used to shim the spring also. The DV only came with one spring, the green one. Any other ideas? Like I said, after cleaning, it went from every time to only occasionally now, but it's annoying that it's happening at all.

Kareem of Elise

it sounds like sometimes flutter is just normal with some DV's? What I don't get is why it would just all of a sudden start if it didn't do it from the onset?

Kareem of Elise

Bueller?......Bueller?.......

TTschwing

Some just do with certain combinations Paul....

My Optimus does and I can't get it not to...No matter what spring rate or orientation I try. Performance is great, but the flutter remains..

Kareem of Elise

Strange......annoying, but I guess livable.

ePuFFy

when I had a crack in the top (little) hose that goes to the DV... it eventually totally split and came de-tached and caused my car to super flutter (kinda 3D flutter).. it was kinda cool actually. haha

MOBlueTT

Are you trying to drive with the hood up AGAIN ??? or just the windows down? ;-P