I’ve done extensive dragy testing with my 2020. I did a JLT, then got the car tuned on 93 by PBD.
Just slapping the JLT on did improve performance slightly. With the JLT then the tune, the car is a rocket. Limiter has been raised beyond 8000rpm and it makes power the whole way.
Stock:
JLT (no tune):
JLT, 93 Tune (hazing the tires):
With an awful 60f, I went 10.7 @ 137mph on this setup. 3/4 tank of gas, full weight with a cargo container in the trunk and air compressor, stock PS4S tires. I also weigh 220. That’s a big mph for an intake and tune on pump gas 😁
Plus, you don’t have to spin the blower any harder and introduce more heat, or deal with the whole pulley swapping!