jb4 tuner

I'm selling my used JB4 Performance tuner from my Kia Stinger. It is compatible with Kia / Hyundai. It retails for $678.00, and can be found here (select JB4 wireless from the dropdown): https://burgertuning.com/collections/kia-hyundai/products/kia-stinger-jb4 $350.00 OBO

Hello all, Recently have notice an extremely consistent max boost of 18.7 on all of my runs. Haven’t had the chance to log anything but no matter the conditions, roll, or dig, I always seem to max boost at about 18.7. This however was not normally the case. I’ve been running JB4 map 3 e30 for...

From my 2019 Stinger GT1 that I sold few months back. I have the original box and everything on the JB4 works. $475 + ship If interested please PM me zip and I can estimate total price.