Did you try all the way tight, less 1 full turn. That was the recommended setting back when i installed mine.

 

Exactly how i set mine and it's perfect.

I did not install the BRA

 

@Focus112 - Nope did not try that, I was under the impression that it was shipped set for "stock" RS - I may give that a try....

 

i have my bov turned 1.5 to 2 turns from full tight. i dont get any flutter at any rpm just the pshhh

 

I have a very similar setup to yours, TS dualport, BRA, K&N intake, Injen catback. With the BRA, it is very easy to get turbo flutter noises coming back through the intake (which is very open and accentuates noise). Especially partial throttle/low to midrange, you're likely not producing enough boost to have sufficient positive pressure for the vacuum line to actually pull open the valve when you close the throttle. Monitoring mine via OBDII, I'll usually get venting above like 2 lbs of boost, anything below that and the turbo will just flutter back through the intake. I suspect that's what you're hearing.

 

I just started installing mods on my RS, recently, and I'm new to tinkering with cars, myself (pls show mercy X3). Similar setup to what has been posted:
TS 50/50 BOV + pink spring
BRA
K&N intake.

I just installed the intake and I noticed the flutter, afterwards on a test drive. It holds boost when accelerating and only flutters off the throttle, but it's not ideal. I run the BOV pretty light, but tomorrow morning I'm going to try and run it tight to see if it fixes the issue (just got home from a test run so everything is hot). If not, I'll probably bypass the MAP and go back to a stock ref setup to see if that fixes it.

Thoughts?
Thanks!

 

The BRA causes the flutter, it happens even with an otherwise stock car.

I just installed the intake and I noticed the flutter, afterwards on a test drive. It holds boost when accelerating and only flutters off the throttle, but it's not ideal.

 

Straight from Adam at tune+ and from turbosmart themselves I was told to crank it till you just see the o ring and then one full turn in. That's with the standard spring and the BRA. I don't get any flutter or release when driving.

 

Thanks for the help, everyone! OG soft spring and BOV readjustment got rid of that pesky flutter ?