Back to data, I logged about half my sessions at Sebring. Looks like around 8000 lines in Excel/log, and I have no idea how to present that much data in zap.
So, I scrolled through it. Cobb IC ran CAI low of 90F and high of 104F over 25 minute session. Looks like IC temps varied about 5 degrees within each lap, and gradually went up over the session to peak temp on back straight last hot lap, but delta T 5 degrees/lap remained about the same. Highest intake air temps were in 5th gear at 5000 rpm just after dumping throttle for turn 17. Highest boost near 22 psi at 4000 rpm.
Unfortunately I did not record ambient temps to compare, but this log was a late am session so it was getting hotter.
So I checked a 20 min PBIR log for same data, looks like delta T/lap runs about 8 degrees there, highest temp 97F 5th gear 5400 rpm dump on back straight. Either PBIR has a longer straight or Turn 17 at Sebring is scary, or both.
Anyway, I consider this very good performance and whatever improvement the new J-line sitting in my garage could offer probably not worth the weight penalty for me.