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Old Apr 6, 2026 | 06:48 AM
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Default FREE Boom Stereo

I have a 23 SGS and over the weekend my friend gave me "free" his old Stage ll Boom Stereo with wire harness, Amp, front and back speakers and Rockford Fosgate speaker grills, I spend several hours installing it and its not any louder than my stock Stereo. I GTS and it looks like is not a direct plug and play I have to have the radio flashed...... I'm guessing there is not another way around it. Does the dealership flash radios?




 
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Old Apr 6, 2026 | 08:42 AM
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Check for software/audio info here
 
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Old Apr 6, 2026 | 08:49 AM
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Originally Posted by rigidthumper
Check for software/audio info here
Awesome ty
 
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Old Apr 7, 2026 | 10:39 AM
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Does anyone know why adding the Boom Amp and stage 2 speakers made it sound less louder than the rinkidink OEM speakers and NO amp?
?
 
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Old Apr 7, 2026 | 12:39 PM
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You need to get your system flashed to enable it. It is not just plug and play. Dealer visit needed.
 
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Old Apr 8, 2026 | 08:53 AM
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Unless something has changed, and there are guys on here a lot sharper than I am on this audio stuff, but... I believe the Boom Stage II system (specifically) will need the "flash" to be done by an HD dealer.
I do not know why, but I remember a few years ago the third party diagnostic software, like TechnoResearch, would not do Stage II specifically.
 
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Old Apr 8, 2026 | 09:00 AM
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Originally Posted by Ssitruc
Unless something has changed, and there are guys on here a lot sharper than I am on this audio stuff, but... I believe the Boom Stage II system (specifically) will need the "flash" to be done by an HD dealer.
I do not know why, but I remember a few years ago the third party diagnostic software, like Techno Research, would not do Stage II specifically.
Hi and yes I stopped at my local HD dealership and they have me scheduled for a Radio Flash this Saturday.
 
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