Tech your right....

But what I was saying was the single plain starts to shine and out perfom the dual plain around 5,500....the dual is still making power it's just above 5500 the single makes more....

Personally I think if you used a dual plain and tinkered with a 1/2 inch to 1 inch open spacer you may do better yet.....Course I swear by a 1 inch spacer on everything!