I went to a private track rental this past weekend and did some testing. Best was 1.37 60ft and 6.19@109 on 15 lbs of boost. AFR seemed a little fat at 10.9 to 11.2, but not bad, though I may lean it out a tad...have to think about it. Made a change to run 17 lbs of boost and the AFR was way rich (mid 10's). I should have taken a closer look at the logs while there and made a change and 1 more pass but decided to stop at that point.

What are you guys running for an air shifter for a 727? What is the total price for everything?