Greatsteaks
Member
I have a 15 ultra that came with the 4.3 infotainment system. I scored a 6.5 on the bay and installed it. I was really impressed with the 4.3 audio quality with the standard stock speakers. After installing the 6.5 the audio quality (EDIT)! Nothing else was added, same speakers no amp was added. Is there a different internal amp that requires a dealer flash or something? I mean it's really flat and way different then before, thanks for any input.
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