Yeah mine was thoroughly Checked for leaks, I only used the one extension cable as well, and it's the new updated one. My thoughts were because it's only during a light load, that it's the bov opening up a little and confusing the mafs? That's why I was thinking sd tune would fix it. Be a couple months before the snow melts before I find out
unless you figure it out first! Haha. Btw, did yours get worse as you drove it from initial tune? When I first picked it up my tuner was the only one that noticed it on his drive home, 2 months later I noticed it once, 3 months later it did it in every gear. Rechecked for boost leaks, holds 15 lbs with no leaks. Sadly no boost gauges or afr gauges yet to see if anything goes weird during issue.
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