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I've sent logs to John V late last night and I'm sure he will respond pretty quickly - he always does - but I thought I would post something to see if others had similar experience. I swapped my OEM BOV for Tial Q's VTA w/ 11pound springs. I have now noticed my idle is really rich. ltft and stft are at 75 across the board and still 13.0 range AFR. Any idea why this is happening? would this mean I had an intake leak before that I now don't have?

I realize most folks suggest an SD tune for VTA, but I know many people that haven't, and just get a little rich condition when the throttle plates close. But why would idle be so rich now?

Only thing that I can think of is that I possibly had an intake leak before that I now don't have... Anyone else with similar issues?
 

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sd tune and all is right with the world
 

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You were leaky before
 
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