Do I have DSP ?? have pics inside

y2k_o__o · 11-23-2013, 09:43 PM

bought my 2003 z4 2.5i a couple week ago and the stock business CD unit is toasted and I am currently replacing it with a Kentwood KDC-255U

All wire from the scosche kit is wire prefectly fine, EXCEPT the headunit has a "P.cont" (remote wire for amp) has no where to go into the scosche harness. I believe it should go to power up the stock amp.

On the other end of the stock harness, I found there is a white harness with 3 extra cables ( see pics below) has nowhere to go.

Not sure if i have the DSP or not, and whether aftermarket will work with this not

PS: my steering wheel has no stereo control.

Additional observation: The kentwood will currently power on, will read CD, but it's just all speaker doesn't produce any sound. Please help

I am working under 1 Deg C outside

elerner61 · 11-27-2013, 02:33 PM

Sorry you didn't get any replies. I have a DSP based system so I don't have specific knowledge on the Business radio. If I were you though, I would just look into replacing the OEM amplifier with aftermarket and be done with it. Pick up someone's used amplifier off of eBay on the cheap. In the short, medium and long run you'll be better off.

newbizie · 11-28-2013, 12:22 PM

I agree with elerner61 If you have an amplifier in the back changing the headunit by itself will not work you will have to change both unless you run all new wiring from the headunit to your speakers....i also suggest not wasting your hard earn money on a $1000 stock amplifier...depending on how many speakers you have you can run one or two 4-channel amplifers for less than $400. I had to replace my business cd about two months ago.

11-23-2013, 09:43 PM	#1
y2k_o__o Private 6 Rep 51 Posts Drives: 2003 Z4 Titanium Silver Join Date: Nov 2013 Location: Richmond, B.C iTrader: (0)	Do I have DSP ?? have pics inside bought my 2003 z4 2.5i a couple week ago and the stock business CD unit is toasted and I am currently replacing it with a Kentwood KDC-255U All wire from the scosche kit is wire prefectly fine, EXCEPT the headunit has a "P.cont" (remote wire for amp) has no where to go into the scosche harness. I believe it should go to power up the stock amp. On the other end of the stock harness, I found there is a white harness with 3 extra cables ( see pics below) has nowhere to go. Not sure if i have the DSP or not, and whether aftermarket will work with this not PS: my steering wheel has no stereo control. Additional observation: The kentwood will currently power on, will read CD, but it's just all speaker doesn't produce any sound. Please help I am working under 1 Deg C outside
	Appreciate 0 Tweet Quote

11-27-2013, 02:33 PM	#2
elerner61 Major 157 Rep 1,107 Posts Drives: '07 Z4M Roadster Join Date: May 2011 Location: Mount Kisco, NY iTrader: (0)	Sorry you didn't get any replies. I have a DSP based system so I don't have specific knowledge on the Business radio. If I were you though, I would just look into replacing the OEM amplifier with aftermarket and be done with it. Pick up someone's used amplifier off of eBay on the cheap. In the short, medium and long run you'll be better off.
	Appreciate 0 Quote

11-28-2013, 12:22 PM	#3
newbizie Private 4 Rep 92 Posts Drives: 05 Z4 3.0i Join Date: Oct 2013 Location: Ft Walton Beach, FL iTrader: (0)	I agree with elerner61 If you have an amplifier in the back changing the headunit by itself will not work you will have to change both unless you run all new wiring from the headunit to your speakers....i also suggest not wasting your hard earn money on a $1000 stock amplifier...depending on how many speakers you have you can run one or two 4-channel amplifers for less than $400. I had to replace my business cd about two months ago.
	Appreciate 0 Quote