I thought map 3 was only supposed to add 4 psi of boost. How did you get 27.5 psi with it? That sounds like a lot of boost for 93 octane. I hope your monitoring the ignition closely. It only takes one bad ignition event, at those boost levels, to do damage.Map 3 for 93 oct.
I run 27.5 psi on that run
With a 12.87 at 107, it sure looks like you found traction. What was your 60 ft time, and how did you improve your traction so much? You sure are making the JB4 sound interesting. Thanks for following up with the information.