Tial bov white or black spring
If it's being used as a diverter it needs to be open at idle. If it's going to atmosphere it needs to be closed at idle, and you will need to be tuned for it. Go diverter with a black spring. Don't listen to the tial chart it lies! It gave me and a buddy a lot of headaches.
If it's being used as a diverter it needs to be open at idle. If it's going to atmosphere it needs to be closed at idle, and you will need to be tuned for it. Go diverter with a black spring. Don't listen to the tial chart it lies! It gave me and a buddy a lot of headaches.

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