I've heard the 6.4 Hemi is sensitive to humidity levels. What I think I'm seeing is high humidity having a noticeable impact on the 1320's 60s, even if the DA is good. Also, if the humidity is increasing even though the DA is dropping, the car isn't really picking up.

I'll post data later, but am interested if anyone else has experienced or suspected a similar pattern. Thx

Last edited by Brad_Haak; 09/18/22 05:04 PM.
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)

1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)