Ignitions and Electrical› Computers, Chips, Modules and Programmers
JB4
N63/N63R/N63TU Plug-and-Play Performance Tuner Module
SKU: N63-N63TU-JB4
Easy — 1–2 hours
Description
MIA's Description
This tuner offers power gains of up to 100hp and 140tq to the wheels on a stock vehicle. It includes features such as multiple performance maps, user-adjustable fuel control, boost-by-gear settings, and support for WMI and E85 ethanol blends. The JB4 also reads and deletes fault codes, logs up to 40 engine parameters, and controls exhaust flap operation on supported vehicles.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | JB4 |
| Part Number | N63-N63TU-JB4 |
| Category | Ignitions and Electrical |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy