I love these SO MUCH. They aren't the best after 110 mph as it is a N/A engine pulling a SUV lol but I wouldn't care, if I wanted more power I'd do hellcat lifters with forged pistons and rods then go supercharger route because the 6.4 would basically be the strongest engine you can get as it's built. On the hunt to find a 6.4 SRT Jeep! :D
Do you have green cats? Or whoever did your tuning tuned out the rear o2 sensors so no CEL? I have a similar setup as you but I'm getting the p0218 and p0219 codes.
Are you driving in auto gear change and what drive mode are you using? Love your exhaust. Sounds much more aggressive than my stock exhaust. Many thanks,