Godscountry, I agree. You are correct. I did only improve from an 11.17-11.07. I neglected to say, the old combo was 13.2:1 and ran on race gas. The new combo is right at 11:1 and runs on pump gas. Additionally, I have done zero test and tune on the new combo to date. I simply ran it the way it was set up for the old engine. I also neglected to say that the 11.17 (old motor) was run with open headers. The 11.07 is through the pipes. I haven't run the new combo with open headers, but in the past, open headers have gained me more than two tenths with my system. Thanks for the comments.