This may be a stupid question but I am currently having radio issues with my cucurrent 16:9 navigation would this effectively replace all the parts that could possibly be broken or bad? I am ready to be done with 9 year old radio components. The car does have DSP and an aftermarket sub with aftermarket amp (previous owner). Thanks

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2003 540i Mtech 6 speed
1989 335is 20 psi.