Yuo really should search the forum first before posting things that have already been answered numerous times. To improve your signal, I assume that what you mean, flash a new radio. I highly recommend the one I'm using, listed in my sig. To improve quality with your bluetooth set, use advanced config or kaiser tweak to change the settings. Both of these things have a ton of info available in the Wiki's
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To my Tilt,
You are gone, but not forgotten. May you be refurbished and given a good home.