2000 gs400 Navigation amp ajustment
04-06-08, 10:23 AM
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2000 gs400 Navigation amp ajustment
I was told there was a post on here that explains how to adjust the factory amp through the navi. unit. Is this possible I heard it makes it alil louder and its a cheaper route than replacing the whole unit....please help
04-15-08, 06:43 PM
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