Pay in 4 interest-free payments of $62.50 Learn more
Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
The JB4 tuner installs between your cars sensors and it's DME/ECU (computer) and manipulates vehicle performance through these connections making your vehicle much faster
Cloud based solution with a web based interface and mobile apps for iOS and Android
It’s offered with a variety of springs for different vacuum levels
- E85/blend
Vehicle Fitment:
G20 3 Series MP Style Carbon Fiber Rear Diffuser (M340i) lci mirror caps The JB4 tuner installs betweenAdd an aggressive and OEM+ touch to the rear of your G20 M340i with an mp style carbon fiber rear diffuser! Fitment: 2019+ G20 M340i 2x2 Carbon Fiber Weave High Gloss, UV Protected Clear Coat Professional Installation highly recommended *For best possible fitment, bumper may have to be removed for install
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