Stage One BMW Speaker Upgrade for E60/E61 Sedan/Wagon with Premium Top Hi-Fi 4 Series Just load one of the

Just load one of the free base maps for your injector size and you are ready to go

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Only solution on the market that tunes using your actual vehicle's software instead of a cookie cutter approach other tuning companies use flashing every car with the same software

fuel floats in above images are for reference only

Stage One BMW Speaker Upgrade for E60/E61 Sedan/Wagon with Premium Top Hi-Fi 4 Series Just load one of theGET 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