The pedal control modules do little or nothing. If you want to improve throttle response, start with tire size and gear ratio. Or (and nobody will be surprised when I say this) a V8 swap.
Our recent experiences are:
2011 JKUR with 3.8L and 4:10 differential gears and an A4 and 35" tires. It feels sluggish. But it's responsive enough for my wife, so she drives it.
2013 JKUR with 3.6L, a few engine mods (CAI, exhaust, 93 octane tune) up from 285 to 300HP, 4.10 gears and a M6 with 35's. It's marginal, especially on the highway and mountain passes.
a 2023 JLUR with the 392 Hemi with a bit of engine work (mostly a premium tune) making 500HP, 3.73 gears, an A8, and 37's. The math says I'd be better with 4.88 or 5.13 gears, but I don't see that happening unless I eventually go up to 40's. As it sits, it will spin all 4 on a hard launch. More Power!!!!! is the answer to most performance issues.