Backend Flash
Already running a JB4? Make it behave
A backend flash works with your piggyback rather than against it, so boost and fuelling stop arguing. For the 3.3T Stinger, G70 and G80.
Also covers Genesis G70 3.3T · Genesis G80 3.3T
What you get
Built around the piggyback
The ECU stops fighting what the JB4 is asking for. Fuelling and timing are set knowing the piggyback is there.
Keeps what you have already bought
No need to remove the device or start again. A backend flash is the cheaper route when a JB4 is already fitted.
A JB4 or ProTuner is required
This one only makes sense with a piggyback fitted. Without one, a custom tune is the right product instead, and we will tell you so.
Before you order
Kia Stinger 3.3T What you will need
- A JB4 or ProTuner already fitted. Without one, choose a custom tune.
- A way to flash: an EK1 for remote flashing from your driveway, or come to us in person. The EK1 is not included.
- A willingness to send datalogs. That is how the calibration gets refined for your car.
Not sure a backend flash is right?
Tell us what is on the car. If a custom tune would serve you better we will say that, even though it is a different sale.