Quote:
Originally Posted by ilivas
You’re saying that the fluttering air noise you hear, is coming from the spring? Don’t know about that.
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I provided a nice long explanation a page back that explained this. Yes, the fluttering noise is associated with how the DV+ operates, which correlates to the spring. It's a fact, not an opinion. As you let off at low RPM, the low amount of boost escapes (Yes, all of it unless you cut it off with acceleration) but due to a stiffer spring, it bounces and causes the fluttering effect. It does not send boost back into the turbo at any rate.