So I upgraded to a Pumaspeed x57 a few weeks ago and I noticed something different about the noises it makes (or doesn’t in this case). With the stock turbo I got a decent amount of turbo flutter, I know it isn’t good for the turbo, but with the new x57 I get none at all. Same turbosmart 50/50 blow off valve was/is on both. Just seems kind of strange to me