People get too caught up on DCR and pump gas. I've looked into this a bit lately and DCR doesn't take into account overlap. Overlap is a key factor when determining what grade of fuel you can minimally run, which is what were all after. More boost, more timing and more power on pump gas.

 

Another thing I noticed from the posts above is that some of you are using .05" duration and some are using .006" and seat durations. What is the correct one to use? I think that is why some are getting DCR's in the upper 9's while others are getting low 8's and high 7's.