Stage One BMW Speaker Upgrade G11/G12 7 Series with Harman Kardon (No Install Video) f23 Stage 2 ACN91 octane: 13%HP

Stage 2 ACN91 octane: 13%HP / 28% TQ

Build the ultimate tune for your S63tu powered vehicle and go from stock to full race calibration

Oil Pressure

EASY INSTALL

Developed and tested in-house from the ground up over the course of almost 2 years prior to its November 2016 debut with new features and updates being added regularly makes the bootmod3 platform a custom BMW factory DME tuning solution like no other on the market today

Stage One BMW Speaker Upgrade G11/G12 7 Series with Harman Kardon (No Install Video) f23 Stage 2 ACN91 octane: 13%HPGET UNBELIEVABLE, CRYSTAL CLEAR SOUND. JUST BY REPLACING YOUR BMW'S SPEAKERS We took your factory BMW speakers and re engineered our upgrade for one thing: clarity. So you can simply swap your original speakers for ours without changing anything else in your audio system, and the result is smooth, natural, yet unbelievably detailed reproduction of your favorite music. PLAY YOUR MUSIC LOUDER. AND ENJOY EVERY NOTE: We engineered the Stage One speakers