Originally Posted by opticownage
Thanks for the input. I figured that was the case with the higher-gear boost levels. The wastegate flutter would make sense too since changing the valve spring rate did nothing.
I was considering trying the Cobb XLE valve: anyone have this with a similar setup?
Also is the flutter even avoidable if it's supposed to be doing that, or would the flutter sound go away with a better seal? Seems like a silly way to regulate boost unless there's a technical reason for the oscillation like that?
I have the Cobb BPV and the cobb EBCS. I get the same noise. Went out to Cobb twice to have the techs listen and ride along because I was scared. Its just the EBCS working properly. Another valve might dampen some of the noise but I am just trying to get used to it (I honestly hate the sputtering noise).