Went out on a limb and installed a JB4 tuner on my wife’s 4xe Wrangler. Very easy install. The performance increase in pretty great. Most places are showing 0-60 around 6.0 seconds. With the JB4, I managed 5.17 on wet asphalt and slightly uphill (w/ 1ft rollout, which is what most testing goes by). I feel a high 4 sec 0-60 is attainable. Highly recommend!