ATR B.O.V. question

[Roc87]

Finally installed my ATR blow off valve and it doesn't seem to work right, I can still hear some turbo "flutter". Is this correct? It seems that unless I have more than 5psi of boost, it doesn't vent at all and I can hear the turbo do the same thing as it did before the bov. I have the adjustment screw just about all the way out. Anyone else experience this?

 

[ACME RACING]

I got mine hooked up to the vacuum line going to the boost gauge and the screw turned in almost all the way in. Mine starts to open around 16lbs after i back off the throttle......Be sure to take the top half off and seal it with silicone around the diahpram where the rod meets it inside..... I used a MightyVac Vacuum tester on it and discovered it wasn't holding any..... Works good now...Just has to be sealed good ............alan

 

[turbojimmy]

You'll still get some flutter because of the tension required to pop it open. If it vents anything over, say 5 psi, it's going to slam shut at 5 psi and the remaining boost will cause a flutter. It did the same thing on my car. When I asked about it (I think it was here - check for other threads on the ATR BOV), the consensus was that you won't eliminate the flutter completely.

HTH,
Jim

 

[Roc87]

Oh well, Guess venting some of the pressure out of that front mount is better than none at all! Thanks for the replies and I'll check the diaphram.