JB4 Performance Tuner

The Kia Stinger / Genesis G70 JB4 Performance Tuner is a plug-and-play device designed to remap boost, timing, and fueling for optimal performance and reduced turbo lag. It integrates with your factory ECU tuning and features a programmable CANbus system, upgradable firmware, and data logging capabilities. The tuner includes safety features to protect the engine and turbocharger, such as keeping boost pressure low until optimal oil and water temperatures are reached.

This performance tuner offers multiple selectable maps, including options for 91 octane, 93 octane, and E85 fuel mixtures, which can be changed on the fly via a smartphone app. Installation is discreet and reversible, allowing it to be removed without a trace. The device is housed in a rugged billet aluminum enclosure and comes with a 5-year warranty.